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NDQ_013113 | Why is it easier to slide a heavy box over a floor that it is to start it sliding in the first place? | a. The box is lighter when it is sliding, b. The box has less mass when it is moving, c. The box has no friction when it is stationary, d. The box has less friction when it is sliding | d | Lesson: friction
What Is Friction:
Friction is a force that opposes motion between two surfaces that are touching. Friction can work for or against us. For example, putting sand on an icy sidewalk increases friction so you are less likely to slip. On the other hand, too much friction between moving parts in a car engi... |
NDQ_013114 | Which statement about rolling friction is false? | a. It would be hard to ride a bike without it, b. It occurs when ball bearings are used, c. It is stronger than sliding friction, d. It is weaker than static friction | c | Lesson: friction
What Is Friction:
Friction is a force that opposes motion between two surfaces that are touching. Friction can work for or against us. For example, putting sand on an icy sidewalk increases friction so you are less likely to slip. On the other hand, too much friction between moving parts in a car engi... |
NDQ_013115 | Fluid friction is greater when the object moving through the fluid is | a. larger, b. smaller, c. faster, d. two of the above | d | Lesson: friction
What Is Friction:
Friction is a force that opposes motion between two surfaces that are touching. Friction can work for or against us. For example, putting sand on an icy sidewalk increases friction so you are less likely to slip. On the other hand, too much friction between moving parts in a car engi... |
NDQ_013117 | A skydiver uses a parachute to | a. increase air resistance, b. cushion the landing, c. slow the descent, d. two of the above | d | Lesson: friction
What Is Friction:
Friction is a force that opposes motion between two surfaces that are touching. Friction can work for or against us. For example, putting sand on an icy sidewalk increases friction so you are less likely to slip. On the other hand, too much friction between moving parts in a car engi... |
NDQ_013118 | Which type of friction occurs between a paddle and the water? | a. static friction, b. sliding friction, c. fluid friction, d. rolling friction | c | Lesson: friction
What Is Friction:
Friction is a force that opposes motion between two surfaces that are touching. Friction can work for or against us. For example, putting sand on an icy sidewalk increases friction so you are less likely to slip. On the other hand, too much friction between moving parts in a car engi... |
NDQ_013120 | Friction is never useful. | a. true, b. false | b | Lesson: friction
What Is Friction:
Friction is a force that opposes motion between two surfaces that are touching. Friction can work for or against us. For example, putting sand on an icy sidewalk increases friction so you are less likely to slip. On the other hand, too much friction between moving parts in a car engi... |
NDQ_013123 | Too much friction can cause parts to wear out. | a. true, b. false | a | Lesson: friction
What Is Friction:
Friction is a force that opposes motion between two surfaces that are touching. Friction can work for or against us. For example, putting sand on an icy sidewalk increases friction so you are less likely to slip. On the other hand, too much friction between moving parts in a car engi... |
NDQ_013125 | Friction can cause scrapes on the skin. | a. true, b. false | a | Lesson: friction
What Is Friction:
Friction is a force that opposes motion between two surfaces that are touching. Friction can work for or against us. For example, putting sand on an icy sidewalk increases friction so you are less likely to slip. On the other hand, too much friction between moving parts in a car engi... |
NDQ_013126 | Friction is a force that opposes motion. | a. true, b. false | a | Lesson: friction
What Is Friction:
Friction is a force that opposes motion between two surfaces that are touching. Friction can work for or against us. For example, putting sand on an icy sidewalk increases friction so you are less likely to slip. On the other hand, too much friction between moving parts in a car engi... |
NDQ_013127 | Some surfaces are so smooth that they have no friction. | a. true, b. false | b | Lesson: friction
What Is Friction:
Friction is a force that opposes motion between two surfaces that are touching. Friction can work for or against us. For example, putting sand on an icy sidewalk increases friction so you are less likely to slip. On the other hand, too much friction between moving parts in a car engi... |
NDQ_013128 | The force of friction between surfaces is always useful. | a. true, b. false | b | Lesson: friction
What Is Friction:
Friction is a force that opposes motion between two surfaces that are touching. Friction can work for or against us. For example, putting sand on an icy sidewalk increases friction so you are less likely to slip. On the other hand, too much friction between moving parts in a car engi... |
NDQ_013129 | You use friction when you strike and light a match. | a. true, b. false | a | Lesson: friction
What Is Friction:
Friction is a force that opposes motion between two surfaces that are touching. Friction can work for or against us. For example, putting sand on an icy sidewalk increases friction so you are less likely to slip. On the other hand, too much friction between moving parts in a car engi... |
NDQ_013130 | It takes more force to slide than to roll a heavy object. | a. true, b. false | a | Lesson: friction
What Is Friction:
Friction is a force that opposes motion between two surfaces that are touching. Friction can work for or against us. For example, putting sand on an icy sidewalk increases friction so you are less likely to slip. On the other hand, too much friction between moving parts in a car engi... |
NDQ_013131 | Sliding friction is greater when the sliding object is heavier. | a. true, b. false | a | Lesson: friction
What Is Friction:
Friction is a force that opposes motion between two surfaces that are touching. Friction can work for or against us. For example, putting sand on an icy sidewalk increases friction so you are less likely to slip. On the other hand, too much friction between moving parts in a car engi... |
NDQ_013132 | Friction works in the same direction as the force applied to move an object. | a. true, b. false | b | Lesson: friction
What Is Friction:
Friction is a force that opposes motion between two surfaces that are touching. Friction can work for or against us. For example, putting sand on an icy sidewalk increases friction so you are less likely to slip. On the other hand, too much friction between moving parts in a car engi... |
NDQ_013133 | Sliding friction is stronger than static friction. | a. true, b. false | b | Lesson: friction
What Is Friction:
Friction is a force that opposes motion between two surfaces that are touching. Friction can work for or against us. For example, putting sand on an icy sidewalk increases friction so you are less likely to slip. On the other hand, too much friction between moving parts in a car engi... |
NDQ_013134 | Rolling friction is weaker than sliding friction. | a. true, b. false | a | Lesson: friction
What Is Friction:
Friction is a force that opposes motion between two surfaces that are touching. Friction can work for or against us. For example, putting sand on an icy sidewalk increases friction so you are less likely to slip. On the other hand, too much friction between moving parts in a car engi... |
NDQ_013135 | When a dolly is stationary, there is rolling friction between the wheels and ground. | a. true, b. false | b | Lesson: friction
What Is Friction:
Friction is a force that opposes motion between two surfaces that are touching. Friction can work for or against us. For example, putting sand on an icy sidewalk increases friction so you are less likely to slip. On the other hand, too much friction between moving parts in a car engi... |
NDQ_013136 | Static friction prevents you from sliding out of your chair to the floor. | a. true, b. false | a | Lesson: friction
What Is Friction:
Friction is a force that opposes motion between two surfaces that are touching. Friction can work for or against us. For example, putting sand on an icy sidewalk increases friction so you are less likely to slip. On the other hand, too much friction between moving parts in a car engi... |
NDQ_013137 | The brakes on a bike create rolling friction. | a. true, b. false | b | Lesson: friction
What Is Friction:
Friction is a force that opposes motion between two surfaces that are touching. Friction can work for or against us. For example, putting sand on an icy sidewalk increases friction so you are less likely to slip. On the other hand, too much friction between moving parts in a car engi... |
NDQ_013138 | type of friction between ice skates and ice | a. friction, b. static friction, c. air resistance, d. fluid, e. sliding friction, f. fluid friction, g. rolling friction | e | Lesson: friction
What Is Friction:
Friction is a force that opposes motion between two surfaces that are touching. Friction can work for or against us. For example, putting sand on an icy sidewalk increases friction so you are less likely to slip. On the other hand, too much friction between moving parts in a car engi... |
NDQ_013139 | any substance that can flow and take the shape of its container | a. friction, b. static friction, c. air resistance, d. fluid, e. sliding friction, f. fluid friction, g. rolling friction | d | Lesson: friction
What Is Friction:
Friction is a force that opposes motion between two surfaces that are touching. Friction can work for or against us. For example, putting sand on an icy sidewalk increases friction so you are less likely to slip. On the other hand, too much friction between moving parts in a car engi... |
NDQ_013140 | force that opposes motion between any two surfaces | a. friction, b. static friction, c. air resistance, d. fluid, e. sliding friction, f. fluid friction, g. rolling friction | a | Lesson: friction
What Is Friction:
Friction is a force that opposes motion between two surfaces that are touching. Friction can work for or against us. For example, putting sand on an icy sidewalk increases friction so you are less likely to slip. On the other hand, too much friction between moving parts in a car engi... |
NDQ_013141 | type of friction between shoes and pavement | a. friction, b. static friction, c. air resistance, d. fluid, e. sliding friction, f. fluid friction, g. rolling friction | b | Lesson: friction
What Is Friction:
Friction is a force that opposes motion between two surfaces that are touching. Friction can work for or against us. For example, putting sand on an icy sidewalk increases friction so you are less likely to slip. On the other hand, too much friction between moving parts in a car engi... |
NDQ_013142 | type of friction between a parachute and air | a. friction, b. static friction, c. air resistance, d. fluid, e. sliding friction, f. fluid friction, g. rolling friction | c | Lesson: friction
What Is Friction:
Friction is a force that opposes motion between two surfaces that are touching. Friction can work for or against us. For example, putting sand on an icy sidewalk increases friction so you are less likely to slip. On the other hand, too much friction between moving parts in a car engi... |
NDQ_013143 | type of friction between roller skates and concrete | a. friction, b. static friction, c. air resistance, d. fluid, e. sliding friction, f. fluid friction, g. rolling friction | g | Lesson: friction
What Is Friction:
Friction is a force that opposes motion between two surfaces that are touching. Friction can work for or against us. For example, putting sand on an icy sidewalk increases friction so you are less likely to slip. On the other hand, too much friction between moving parts in a car engi... |
NDQ_013144 | type of friction between an object and a gas or liquid | a. friction, b. static friction, c. air resistance, d. fluid, e. sliding friction, f. fluid friction, g. rolling friction | f | Lesson: friction
What Is Friction:
Friction is a force that opposes motion between two surfaces that are touching. Friction can work for or against us. For example, putting sand on an icy sidewalk increases friction so you are less likely to slip. On the other hand, too much friction between moving parts in a car engi... |
NDQ_013153 | The SI unit for weight is the | a. gram, b. kilogram, c. newton, d. poun | c | Lesson: gravity
Defining Gravity:
Gravity has traditionally been defined as a force of attraction between two masses. According to this conception of gravity, anything that has mass, no matter how small, exerts gravity on other matter. The effect of gravity is that objects exert a pull on other objects. Unlike frictio... |
NDQ_013155 | Newtons law of universal gravitation states that the force of gravity | a. affects all objects in the universe, b. is stronger for objects with more mass, c. is stronger for objects that are closer together, d. all of the above | d | Lesson: gravity
Defining Gravity:
Gravity has traditionally been defined as a force of attraction between two masses. According to this conception of gravity, anything that has mass, no matter how small, exerts gravity on other matter. The effect of gravity is that objects exert a pull on other objects. Unlike frictio... |
NDQ_013157 | Gravity causes all objects to | a. attract one another, b. have projectile motion, c. accelerate when they fall toward Earth, d. two of the above | d | Lesson: gravity
Defining Gravity:
Gravity has traditionally been defined as a force of attraction between two masses. According to this conception of gravity, anything that has mass, no matter how small, exerts gravity on other matter. The effect of gravity is that objects exert a pull on other objects. Unlike frictio... |
NDQ_013158 | The only reason that a leaf falls to the ground more slowly than an acorn is that the leaf has | a. less mass, b. more air resistance, c. a weaker force of gravity, d. less acceleration due to gravity | b | Lesson: gravity
Defining Gravity:
Gravity has traditionally been defined as a force of attraction between two masses. According to this conception of gravity, anything that has mass, no matter how small, exerts gravity on other matter. The effect of gravity is that objects exert a pull on other objects. Unlike frictio... |
NDQ_013161 | On Earth, a mass of 1 kilogram exerts a downward force due to gravity of about | a. 1 N, b. 5 N, c. 10 N, d. 15 N | c | Lesson: gravity
Defining Gravity:
Gravity has traditionally been defined as a force of attraction between two masses. According to this conception of gravity, anything that has mass, no matter how small, exerts gravity on other matter. The effect of gravity is that objects exert a pull on other objects. Unlike frictio... |
NDQ_013165 | Satellites orbit Earth because of gravity. | a. true, b. false | a | Lesson: gravity
Defining Gravity:
Gravity has traditionally been defined as a force of attraction between two masses. According to this conception of gravity, anything that has mass, no matter how small, exerts gravity on other matter. The effect of gravity is that objects exert a pull on other objects. Unlike frictio... |
NDQ_013168 | An object has a greater mass on Earth than it does on the moon. | a. true, b. false | b | Lesson: gravity
Defining Gravity:
Gravity has traditionally been defined as a force of attraction between two masses. According to this conception of gravity, anything that has mass, no matter how small, exerts gravity on other matter. The effect of gravity is that objects exert a pull on other objects. Unlike frictio... |
NDQ_013170 | Molecules of gas are attracted toward one another by gravity. | a. true, b. false | a | Lesson: gravity
Defining Gravity:
Gravity has traditionally been defined as a force of attraction between two masses. According to this conception of gravity, anything that has mass, no matter how small, exerts gravity on other matter. The effect of gravity is that objects exert a pull on other objects. Unlike frictio... |
NDQ_013171 | All of the solar systems in the universe formed because of gravity. | a. true, b. false | a | Lesson: gravity
Defining Gravity:
Gravity has traditionally been defined as a force of attraction between two masses. According to this conception of gravity, anything that has mass, no matter how small, exerts gravity on other matter. The effect of gravity is that objects exert a pull on other objects. Unlike frictio... |
NDQ_013172 | The mass of an object affects its force of gravity. | a. true, b. false | a | Lesson: gravity
Defining Gravity:
Gravity has traditionally been defined as a force of attraction between two masses. According to this conception of gravity, anything that has mass, no matter how small, exerts gravity on other matter. The effect of gravity is that objects exert a pull on other objects. Unlike frictio... |
NDQ_013173 | Gravity acts only between objects that are close together or touching. | a. true, b. false | b | Lesson: gravity
Defining Gravity:
Gravity has traditionally been defined as a force of attraction between two masses. According to this conception of gravity, anything that has mass, no matter how small, exerts gravity on other matter. The effect of gravity is that objects exert a pull on other objects. Unlike frictio... |
NDQ_013174 | Objects that are closer together have a weaker force of gravity. | a. true, b. false | b | Lesson: gravity
Defining Gravity:
Gravity has traditionally been defined as a force of attraction between two masses. According to this conception of gravity, anything that has mass, no matter how small, exerts gravity on other matter. The effect of gravity is that objects exert a pull on other objects. Unlike frictio... |
NDQ_013175 | All objects have the same acceleration due to gravity. | a. true, b. false | a | Lesson: gravity
Defining Gravity:
Gravity has traditionally been defined as a force of attraction between two masses. According to this conception of gravity, anything that has mass, no matter how small, exerts gravity on other matter. The effect of gravity is that objects exert a pull on other objects. Unlike frictio... |
NDQ_013176 | Earth has stronger gravity than the moon. | a. true, b. false | a | Lesson: gravity
Defining Gravity:
Gravity has traditionally been defined as a force of attraction between two masses. According to this conception of gravity, anything that has mass, no matter how small, exerts gravity on other matter. The effect of gravity is that objects exert a pull on other objects. Unlike frictio... |
NDQ_013177 | The curved path of an arrow is called its orbit. | a. true, b. false | b | Lesson: gravity
Defining Gravity:
Gravity has traditionally been defined as a force of attraction between two masses. According to this conception of gravity, anything that has mass, no matter how small, exerts gravity on other matter. The effect of gravity is that objects exert a pull on other objects. Unlike frictio... |
NDQ_013178 | Weight is measured with a balance. | a. true, b. false | b | Lesson: gravity
Defining Gravity:
Gravity has traditionally been defined as a force of attraction between two masses. According to this conception of gravity, anything that has mass, no matter how small, exerts gravity on other matter. The effect of gravity is that objects exert a pull on other objects. Unlike frictio... |
NDQ_013179 | People have known about gravity for thousands of years. | a. true, b. false | a | Lesson: gravity
Defining Gravity:
Gravity has traditionally been defined as a force of attraction between two masses. According to this conception of gravity, anything that has mass, no matter how small, exerts gravity on other matter. The effect of gravity is that objects exert a pull on other objects. Unlike frictio... |
NDQ_013180 | The moon has both forward velocity and acceleration toward Earth. | a. true, b. false | a | Lesson: gravity
Defining Gravity:
Gravity has traditionally been defined as a force of attraction between two masses. According to this conception of gravity, anything that has mass, no matter how small, exerts gravity on other matter. The effect of gravity is that objects exert a pull on other objects. Unlike frictio... |
NDQ_013181 | Einsteins theory of gravity is better than Newtons law of gravity at predicting how all objects move. | a. true, b. false | a | Lesson: gravity
Defining Gravity:
Gravity has traditionally been defined as a force of attraction between two masses. According to this conception of gravity, anything that has mass, no matter how small, exerts gravity on other matter. The effect of gravity is that objects exert a pull on other objects. Unlike frictio... |
NDQ_013182 | Einstein defined gravity as a force of attraction between objects with mass. | a. true, b. false | b | Lesson: gravity
Defining Gravity:
Gravity has traditionally been defined as a force of attraction between two masses. According to this conception of gravity, anything that has mass, no matter how small, exerts gravity on other matter. The effect of gravity is that objects exert a pull on other objects. Unlike frictio... |
NDQ_013183 | SI unit for weight | a. gravity, b. Isaac Newton, c. orbit, d. weight, e. projectile motion, f. Albert Einstein, g. newton | g | Lesson: gravity
Defining Gravity:
Gravity has traditionally been defined as a force of attraction between two masses. According to this conception of gravity, anything that has mass, no matter how small, exerts gravity on other matter. The effect of gravity is that objects exert a pull on other objects. Unlike frictio... |
NDQ_013184 | motion of an object subject to horizontal force and the force of gravity | a. gravity, b. Isaac Newton, c. orbit, d. weight, e. projectile motion, f. Albert Einstein, g. newton | e | Lesson: gravity
Defining Gravity:
Gravity has traditionally been defined as a force of attraction between two masses. According to this conception of gravity, anything that has mass, no matter how small, exerts gravity on other matter. The effect of gravity is that objects exert a pull on other objects. Unlike frictio... |
NDQ_013185 | force of attraction between two masses | a. gravity, b. Isaac Newton, c. orbit, d. weight, e. projectile motion, f. Albert Einstein, g. newton | a | Lesson: gravity
Defining Gravity:
Gravity has traditionally been defined as a force of attraction between two masses. According to this conception of gravity, anything that has mass, no matter how small, exerts gravity on other matter. The effect of gravity is that objects exert a pull on other objects. Unlike frictio... |
NDQ_013186 | scientist who proposed that gravity is due to curves in space and time | a. gravity, b. Isaac Newton, c. orbit, d. weight, e. projectile motion, f. Albert Einstein, g. newton | f | Lesson: gravity
Defining Gravity:
Gravity has traditionally been defined as a force of attraction between two masses. According to this conception of gravity, anything that has mass, no matter how small, exerts gravity on other matter. The effect of gravity is that objects exert a pull on other objects. Unlike frictio... |
NDQ_013187 | measure of the force of gravity | a. gravity, b. Isaac Newton, c. orbit, d. weight, e. projectile motion, f. Albert Einstein, g. newton | d | Lesson: gravity
Defining Gravity:
Gravity has traditionally been defined as a force of attraction between two masses. According to this conception of gravity, anything that has mass, no matter how small, exerts gravity on other matter. The effect of gravity is that objects exert a pull on other objects. Unlike frictio... |
NDQ_013188 | path of one object around another, such as the moon around Earth | a. gravity, b. Isaac Newton, c. orbit, d. weight, e. projectile motion, f. Albert Einstein, g. newton | c | Lesson: gravity
Defining Gravity:
Gravity has traditionally been defined as a force of attraction between two masses. According to this conception of gravity, anything that has mass, no matter how small, exerts gravity on other matter. The effect of gravity is that objects exert a pull on other objects. Unlike frictio... |
NDQ_013189 | scientist who proposed the law of universal gravitation | a. gravity, b. Isaac Newton, c. orbit, d. weight, e. projectile motion, f. Albert Einstein, g. newton | b | Lesson: gravity
Defining Gravity:
Gravity has traditionally been defined as a force of attraction between two masses. According to this conception of gravity, anything that has mass, no matter how small, exerts gravity on other matter. The effect of gravity is that objects exert a pull on other objects. Unlike frictio... |
NDQ_013190 | Gravity always causes objects to | a. repel each other, b. circle each other, c. attract each other, d. two of the above | c | Lesson: gravity
Defining Gravity:
Gravity has traditionally been defined as a force of attraction between two masses. According to this conception of gravity, anything that has mass, no matter how small, exerts gravity on other matter. The effect of gravity is that objects exert a pull on other objects. Unlike frictio... |
NDQ_013191 | Unlike friction, gravity | a. is a force, b. acts over a distance, c. acts between objects that are not touching, d. two of the above | d | Lesson: gravity
Defining Gravity:
Gravity has traditionally been defined as a force of attraction between two masses. According to this conception of gravity, anything that has mass, no matter how small, exerts gravity on other matter. The effect of gravity is that objects exert a pull on other objects. Unlike frictio... |
NDQ_013192 | What does weight measure? | a. size, b. mass, c. force, d. volume | c | Lesson: gravity
Defining Gravity:
Gravity has traditionally been defined as a force of attraction between two masses. According to this conception of gravity, anything that has mass, no matter how small, exerts gravity on other matter. The effect of gravity is that objects exert a pull on other objects. Unlike frictio... |
NDQ_013193 | Jody has a mass of 50 kilograms. What is his weight on Earth? | a. 5N, b. 50 N, c. 500 N, d. 5000 N | c | Lesson: gravity
Defining Gravity:
Gravity has traditionally been defined as a force of attraction between two masses. According to this conception of gravity, anything that has mass, no matter how small, exerts gravity on other matter. The effect of gravity is that objects exert a pull on other objects. Unlike frictio... |
NDQ_013194 | There is gravity between you and | a. Earth, b. the moon, c. your desk, d. all of the above | d | Lesson: gravity
Defining Gravity:
Gravity has traditionally been defined as a force of attraction between two masses. According to this conception of gravity, anything that has mass, no matter how small, exerts gravity on other matter. The effect of gravity is that objects exert a pull on other objects. Unlike frictio... |
NDQ_013195 | The moon orbits Earth rather than the sun because | a. the suns gravity is weaker than Earths, b. the moon is smaller than Earth, c. Earth already orbits the sun, d. the moon is closer to Earth | d | Lesson: gravity
Defining Gravity:
Gravity has traditionally been defined as a force of attraction between two masses. According to this conception of gravity, anything that has mass, no matter how small, exerts gravity on other matter. The effect of gravity is that objects exert a pull on other objects. Unlike frictio... |
NDQ_013196 | An object with greater mass | a. has greater acceleration when it falls, b. has a weaker force of gravity, c. is less affected by gravity, d. has greater weight | d | Lesson: gravity
Defining Gravity:
Gravity has traditionally been defined as a force of attraction between two masses. According to this conception of gravity, anything that has mass, no matter how small, exerts gravity on other matter. The effect of gravity is that objects exert a pull on other objects. Unlike frictio... |
NDQ_013197 | Which of the following items has the property of elasticity? | a. rubber band, b. paper clip, c. toothpick, d. iron nail | a | Lesson: elastic force
Elasticity and Elastic Force:
Something that is elastic can return to its original shape after being stretched or compressed. This property is called elasticity. As you stretch or compress an elastic material, it resists the change in shape. It exerts a counter force in the opposite direction. Th... |
NDQ_013198 | force exerted on a material that is pulled apart | a. elastic force, b. stretching force, c. compressing force, d. elasticity, e. spring | b | Lesson: elastic force
Elasticity and Elastic Force:
Something that is elastic can return to its original shape after being stretched or compressed. This property is called elasticity. As you stretch or compress an elastic material, it resists the change in shape. It exerts a counter force in the opposite direction. Th... |
NDQ_013199 | structure that returns to its original shape after being stretched or compressed | a. elastic force, b. stretching force, c. compressing force, d. elasticity, e. spring | e | Lesson: elastic force
Elasticity and Elastic Force:
Something that is elastic can return to its original shape after being stretched or compressed. This property is called elasticity. As you stretch or compress an elastic material, it resists the change in shape. It exerts a counter force in the opposite direction. Th... |
NDQ_013200 | When does an elastic material exert elastic force? | a. before it is stretched, b. as it is stretched, c. when it is released, d. two of the above | d | Lesson: elastic force
Elasticity and Elastic Force:
Something that is elastic can return to its original shape after being stretched or compressed. This property is called elasticity. As you stretch or compress an elastic material, it resists the change in shape. It exerts a counter force in the opposite direction. Th... |
NDQ_013201 | force exerted on a material that is pushed together | a. elastic force, b. stretching force, c. compressing force, d. elasticity, e. spring | c | Lesson: elastic force
Elasticity and Elastic Force:
Something that is elastic can return to its original shape after being stretched or compressed. This property is called elasticity. As you stretch or compress an elastic material, it resists the change in shape. It exerts a counter force in the opposite direction. Th... |
NDQ_013202 | What happens when you pull on a bungee cord? | a. It stretches, b. It resists the change in shape, c. It exerts force in the opposite direction, d. all of the above | d | Lesson: elastic force
Elasticity and Elastic Force:
Something that is elastic can return to its original shape after being stretched or compressed. This property is called elasticity. As you stretch or compress an elastic material, it resists the change in shape. It exerts a counter force in the opposite direction. Th... |
NDQ_013203 | When you jump on a trampoline, the surface of the trampoline | a. changes shape, b. exerts elastic force, c. pushes you up into the air, d. all of the above | d | Lesson: elastic force
Elasticity and Elastic Force:
Something that is elastic can return to its original shape after being stretched or compressed. This property is called elasticity. As you stretch or compress an elastic material, it resists the change in shape. It exerts a counter force in the opposite direction. Th... |
NDQ_013204 | counter force exerted by an elastic material that is stretched or compressed | a. elastic force, b. stretching force, c. compressing force, d. elasticity, e. spring | a | Lesson: elastic force
Elasticity and Elastic Force:
Something that is elastic can return to its original shape after being stretched or compressed. This property is called elasticity. As you stretch or compress an elastic material, it resists the change in shape. It exerts a counter force in the opposite direction. Th... |
NDQ_013205 | Elastic force causes an elastic material to | a. push back when pulled, b. return to its original shape, c. take the shape of its container, d. two of the above | d | Lesson: elastic force
Elasticity and Elastic Force:
Something that is elastic can return to its original shape after being stretched or compressed. This property is called elasticity. As you stretch or compress an elastic material, it resists the change in shape. It exerts a counter force in the opposite direction. Th... |
NDQ_013206 | ability of a material to return to its original shape after being stretched or compressed | a. elastic force, b. stretching force, c. compressing force, d. elasticity, e. spring | d | Lesson: elastic force
Elasticity and Elastic Force:
Something that is elastic can return to its original shape after being stretched or compressed. This property is called elasticity. As you stretch or compress an elastic material, it resists the change in shape. It exerts a counter force in the opposite direction. Th... |
NDQ_013208 | Something that is elastic springs back after being stretched. | a. true, b. false | a | Lesson: elastic force
Elasticity and Elastic Force:
Something that is elastic can return to its original shape after being stretched or compressed. This property is called elasticity. As you stretch or compress an elastic material, it resists the change in shape. It exerts a counter force in the opposite direction. Th... |
NDQ_013210 | An elastic material resists a change in shape. | a. true, b. false | a | Lesson: elastic force
Elasticity and Elastic Force:
Something that is elastic can return to its original shape after being stretched or compressed. This property is called elasticity. As you stretch or compress an elastic material, it resists the change in shape. It exerts a counter force in the opposite direction. Th... |
NDQ_013211 | Elastic force is not very useful. | a. true, b. false | b | Lesson: elastic force
Elasticity and Elastic Force:
Something that is elastic can return to its original shape after being stretched or compressed. This property is called elasticity. As you stretch or compress an elastic material, it resists the change in shape. It exerts a counter force in the opposite direction. Th... |
NDQ_013214 | When you use a resistance band, resistance comes from elastic force. | a. true, b. false | a | Lesson: elastic force
Elasticity and Elastic Force:
Something that is elastic can return to its original shape after being stretched or compressed. This property is called elasticity. As you stretch or compress an elastic material, it resists the change in shape. It exerts a counter force in the opposite direction. Th... |
NDQ_013216 | Glass is an example of an elastic material. | a. true, b. false | b | Lesson: elastic force
Elasticity and Elastic Force:
Something that is elastic can return to its original shape after being stretched or compressed. This property is called elasticity. As you stretch or compress an elastic material, it resists the change in shape. It exerts a counter force in the opposite direction. Th... |
NDQ_013217 | Items that are elastic include | a. metal wires, b. concrete blocks, c. plastic spring toys, d. all of the above | c | Lesson: elastic force
Elasticity and Elastic Force:
Something that is elastic can return to its original shape after being stretched or compressed. This property is called elasticity. As you stretch or compress an elastic material, it resists the change in shape. It exerts a counter force in the opposite direction. Th... |
NDQ_013218 | When you compress a spring, it resists the change in shape. | a. true, b. false | a | Lesson: elastic force
Elasticity and Elastic Force:
Something that is elastic can return to its original shape after being stretched or compressed. This property is called elasticity. As you stretch or compress an elastic material, it resists the change in shape. It exerts a counter force in the opposite direction. Th... |
NDQ_013219 | A rubber band keeps a newspaper tightly rolled because it | a. can be tied tightly, b. exerts elastic force, c. is unbreakable, d. none of the above | b | Lesson: elastic force
Elasticity and Elastic Force:
Something that is elastic can return to its original shape after being stretched or compressed. This property is called elasticity. As you stretch or compress an elastic material, it resists the change in shape. It exerts a counter force in the opposite direction. Th... |
NDQ_013220 | Paper is an example of an elastic material. | a. true, b. false | b | Lesson: elastic force
Elasticity and Elastic Force:
Something that is elastic can return to its original shape after being stretched or compressed. This property is called elasticity. As you stretch or compress an elastic material, it resists the change in shape. It exerts a counter force in the opposite direction. Th... |
NDQ_013221 | When you compress a spring, it | a. resists the change in shape, b. exerts a force in the same direction, c. permanently changes to a new shape, d. two of the above | a | Lesson: elastic force
Elasticity and Elastic Force:
Something that is elastic can return to its original shape after being stretched or compressed. This property is called elasticity. As you stretch or compress an elastic material, it resists the change in shape. It exerts a counter force in the opposite direction. Th... |
NDQ_013222 | As you stretch a bungee cord, its elastic force gets stronger. | a. true, b. false | a | Lesson: elastic force
Elasticity and Elastic Force:
Something that is elastic can return to its original shape after being stretched or compressed. This property is called elasticity. As you stretch or compress an elastic material, it resists the change in shape. It exerts a counter force in the opposite direction. Th... |
NDQ_013223 | When you release a stretched bungee cord, it returns to its original shape because of gravity. | a. true, b. false | b | Lesson: elastic force
Elasticity and Elastic Force:
Something that is elastic can return to its original shape after being stretched or compressed. This property is called elasticity. As you stretch or compress an elastic material, it resists the change in shape. It exerts a counter force in the opposite direction. Th... |
NDQ_013224 | Springs are used in | a. beds, b. cars, c. scales, d. all of the above | d | Lesson: elastic force
Elasticity and Elastic Force:
Something that is elastic can return to its original shape after being stretched or compressed. This property is called elasticity. As you stretch or compress an elastic material, it resists the change in shape. It exerts a counter force in the opposite direction. Th... |
NDQ_013225 | Something that is elastic returns to its original shape after being compressed. | a. true, b. false | a | Lesson: elastic force
Elasticity and Elastic Force:
Something that is elastic can return to its original shape after being stretched or compressed. This property is called elasticity. As you stretch or compress an elastic material, it resists the change in shape. It exerts a counter force in the opposite direction. Th... |
NDQ_013226 | What happens when the stretching force on an elastic material is released? | a. The material breaks, b. The material remains stretched out, c. The material starts to exert elastic force, d. The material snaps back to its original shape | d | Lesson: elastic force
Elasticity and Elastic Force:
Something that is elastic can return to its original shape after being stretched or compressed. This property is called elasticity. As you stretch or compress an elastic material, it resists the change in shape. It exerts a counter force in the opposite direction. Th... |
NDQ_013232 | Newtons first law of motion is also called the law of | a. mass, b. inertia, c. velocity, d. unbalanced forces | b | Lesson: newtons first law
Force and Motion:
Newtons first law of motion states that an objects motion will not change unless an unbalanced force acts on the object. If the object is at rest, it will stay at rest. If the object is in motion, it will stay in motion and its velocity will remain the same. In other words, ... |
NDQ_013233 | Newtons first law of motion states than an objects motion will not change unless | a. the net force acting on it is greater than zero, b. a force continues to be applied to the object, c. its inertia is stronger than the applied force, d. the object has no inertia | a | Lesson: newtons first law
Force and Motion:
Newtons first law of motion states that an objects motion will not change unless an unbalanced force acts on the object. If the object is at rest, it will stay at rest. If the object is in motion, it will stay in motion and its velocity will remain the same. In other words, ... |
NDQ_013234 | Overcoming an objects inertia always requires a(n) | a. large mass, b. massive force, c. unbalanced force, d. two of the above | c | Lesson: newtons first law
Force and Motion:
Newtons first law of motion states that an objects motion will not change unless an unbalanced force acts on the object. If the object is at rest, it will stay at rest. If the object is in motion, it will stay in motion and its velocity will remain the same. In other words, ... |
NDQ_013235 | Once an applied force causes an object to start moving, the object keeps moving because | a. the force continues to be applied to it, b. no other force is acting on it, c. it has inertia, d. none of the above | c | Lesson: newtons first law
Force and Motion:
Newtons first law of motion states that an objects motion will not change unless an unbalanced force acts on the object. If the object is at rest, it will stay at rest. If the object is in motion, it will stay in motion and its velocity will remain the same. In other words, ... |
NDQ_013236 | It is more difficult to start a 50-kg box sliding across the floor than a 5-kg box because the 50-kg box has greater | a. size, b. inertia, c. volume, d. velocity | b | Lesson: newtons first law
Force and Motion:
Newtons first law of motion states that an objects motion will not change unless an unbalanced force acts on the object. If the object is at rest, it will stay at rest. If the object is in motion, it will stay in motion and its velocity will remain the same. In other words, ... |
NDQ_013237 | If the net force acting on any object is zero, the object will | a. not move, b. change its motion, c. have zero velocity, d. none of the above | d | Lesson: newtons first law
Force and Motion:
Newtons first law of motion states that an objects motion will not change unless an unbalanced force acts on the object. If the object is at rest, it will stay at rest. If the object is in motion, it will stay in motion and its velocity will remain the same. In other words, ... |
NDQ_013238 | Once an object starts moving along a clear path, it would keep moving at the same velocity if it were not for | a. inerti, b. friction, c. an unbalanced force, d. two of the above | d | Lesson: newtons first law
Force and Motion:
Newtons first law of motion states that an objects motion will not change unless an unbalanced force acts on the object. If the object is at rest, it will stay at rest. If the object is in motion, it will stay in motion and its velocity will remain the same. In other words, ... |
NDQ_013239 | If you run into a curb on your bike, you might fly forward over the handlebars because of | a. air resistance, b. inertia, c. friction, d. gravity | b | Lesson: newtons first law
Force and Motion:
Newtons first law of motion states that an objects motion will not change unless an unbalanced force acts on the object. If the object is at rest, it will stay at rest. If the object is in motion, it will stay in motion and its velocity will remain the same. In other words, ... |
NDQ_013240 | An objects velocity will not change unless it is acted on by a(n) | a. net force, b. strong force, c. unbalanced force, d. opposite but equal force | c | Lesson: newtons first law
Force and Motion:
Newtons first law of motion states that an objects motion will not change unless an unbalanced force acts on the object. If the object is at rest, it will stay at rest. If the object is in motion, it will stay in motion and its velocity will remain the same. In other words, ... |
NDQ_013241 | Inertia causes a stationary object to | a. start moving, b. remain stationary, c. have an increase in velocity, d. change its speed or direction | b | Lesson: newtons first law
Force and Motion:
Newtons first law of motion states that an objects motion will not change unless an unbalanced force acts on the object. If the object is at rest, it will stay at rest. If the object is in motion, it will stay in motion and its velocity will remain the same. In other words, ... |
NDQ_013242 | The direction of a moving object will not change if the net force acting on it is | a. greater than zero, b. less than zero, c. zero, d. two of the above | c | Lesson: newtons first law
Force and Motion:
Newtons first law of motion states that an objects motion will not change unless an unbalanced force acts on the object. If the object is at rest, it will stay at rest. If the object is in motion, it will stay in motion and its velocity will remain the same. In other words, ... |
NDQ_013245 | Inertia is the tendency of an object to resist motion. | a. true, b. false | b | Lesson: newtons first law
Force and Motion:
Newtons first law of motion states that an objects motion will not change unless an unbalanced force acts on the object. If the object is at rest, it will stay at rest. If the object is in motion, it will stay in motion and its velocity will remain the same. In other words, ... |
NDQ_013247 | Newtons first law of motion is also called the law of acceleration. | a. true, b. false | b | Lesson: newtons first law
Force and Motion:
Newtons first law of motion states that an objects motion will not change unless an unbalanced force acts on the object. If the object is at rest, it will stay at rest. If the object is in motion, it will stay in motion and its velocity will remain the same. In other words, ... |
NDQ_013249 | If an object is at rest, inertia will keep it at rest. | a. true, b. false | a | Lesson: newtons first law
Force and Motion:
Newtons first law of motion states that an objects motion will not change unless an unbalanced force acts on the object. If the object is at rest, it will stay at rest. If the object is in motion, it will stay in motion and its velocity will remain the same. In other words, ... |
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