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food is a kind of chemical energy
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green plants perform photosynthesis to get food
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a redwood tree is a kind of tree
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a giant redwood tree is a kind of redwood tree
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photosynthesis means green plants convert solar energy to food
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energy transformation means one kind of energy changes into another kind of energy
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lighting a candle causes that candle to burn
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burning is similar to combustion
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a candle is made of wax
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wax contains chemical energy
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combustion means fire converts chemical energy into light energy and heat energy
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fuel is a source of mechanical energy for cars to move
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if an object is not moving it does not have any motion to counter
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a car is moving on a level road
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if an object has 0 mechanical energy, then the object will stop moving
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the car runs out of fuel
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if one surface is moving on another surface then those surfaces are touching
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friction acts to counter the motion of two objects when their surfaces are touching
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if something is decreased and there is no source of that something to provide more of that something, then that something will decrease to 0
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countering the motion of a moving object means decreasing the mechanical energy of the moving object
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sonar usually is used for locating objects underwater
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sonar is used to find the location of an object by sound waves
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electromagnets generate magnetic fields
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a electromagnet is formed by attaching an iron nail wrapped in a copper wire to a circuit
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creating a simple circuit requires a wire / battery
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wire was looped several times around an iron nail
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the wire's ends were connected to a battery
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moving a coil of wire in the magnetic field generates electrical current
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a metal loop is similar to a coil of wire
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a battery converts chemical energy into electrical energy for powering electrical devices
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a radio is a kind of electrical device
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a flashlight emits light
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a kind of is similar to a form of
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a flashlight is a kind of battery-operated device
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electrical devices convert from electrical energy into other forms of energy
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batteries convert chemical energy to electrical energy
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battery is the source of electrical energy for battery-operated device
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a flashlight is a kind of electrical device
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light is a kind of energy
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batteries convert chemical energy to electrical energy
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a flashlight is a kind of electrical device
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a kind of is similar to a form of
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a flashlight emits light
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electrical devices convert from electrical energy into other forms of energy
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a flashlight is a kind of battery-operated device
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light is a kind of energy
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battery is the source of electrical energy for battery-operated device
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a wind turbine converts wind energy into mechanical energy for a generator
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a generator converts mechanical energy to electrical energy
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hammering an object requires movement
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an example of mechanical energy is an object in motion
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a nail is a kind of object
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an electric circuit is a vehicle for moving electrical energy from the source to the electrical device
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electricity is a kind of electrical energy
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a light bulb is a kind of electrical device
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an electrical device requires electricity to turn on
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when a switch in a simple series circuit is closed , electricity will flow through the circuit
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plastic is an electrical insulator
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plastic tape is made of plastic
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an electrical insulator prevents the flow of electricity
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light is a kind of energy
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sound is a kind of energy
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heat is a kind of energy
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if something converts one kind of energy into other kinds of energy then that something originally stores that energy as the first kind of energy
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a firecracker converts chemical energy into sound energy and light energy and heat energy
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gas is a kind of state of matter
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water is a kind of substance
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liquid is a kind of state of matter
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heat energy can change the state of matter
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heat is a kind of heat energy
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liquid is a kind of state of matter
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heat energy can change the state of matter
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solid is a kind of state of matter
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melting means a substance changes from a solid into a liquid by increasing heat energy
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an ice cube is a kind of solid
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heat is a kind of heat energy
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a car engine is a source of heat
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heat energy can change the state of matter
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ice is a kind of solid
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liquid is a kind of state of matter
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melting means a substance changes from a solid into a liquid by increasing heat energy
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solid is a kind of state of matter
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ice is a kind of solid
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melting means a substance changes from a solid into a liquid by increasing heat energy
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heat energy can change the state of matter
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heat is a kind of heat energy
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solid is a kind of state of matter
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the sun is a source of radiation / heat called sunlight
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liquid is a kind of state of matter
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an x ray is a kind of electromagnetic wave
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ultraviolet light is a kind of electromagnetic energy
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electromagnetic energy travels as electromagnetic waves
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a block is a kind of object
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mechanical energy exerted by an object can be used to push or pull another object
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a person is a kind of object
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pedals are a kind of object
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pedalling a bicycle requires moving the pedals in a circular motion
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mechanical energy can cause objects to move
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a vehicle is a kind of object
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an example of mechanical energy is an object in motion
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