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the wax from a candle drips
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wax is a kind of matter
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melting means matter / a substance changes from a solid into a liquid by increasing heat energy
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ice cream is a kind of solid
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if something is taken out of a freezer then it's moved to a warmer place
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temperature is a measure of heat energy
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ice cream is left out of a freezer
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moving an object from a cool place to a warm place causes the object 's temperature to increase
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melting means matter / a substance changes from a solid into a liquid by increasing heat energy
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a solid object is heated
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heating means adding heat
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melting means matter / a substance changes from a solid into a liquid by increasing heat energy
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ice cream changes from solid to liquid
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a solid is a kind of substance
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ice cream is a kind of solid
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ice is colder in temperature than water
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a waterfall contains water
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a glacier is made of ice
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water is a kind of liquid at room temperature
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temperature is a measure of heat energy
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water is a kind of substance
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freezing means matter / a substance changes from a liquid into a solid by decreasing heat energy
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water is boiling in the pot
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boiling means a substance changes from a liquid into a gas by increasing heat energy
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water is a kind of liquid at room temperature
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heat is taken away from a container of water
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water is a kind of substance
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freezing means a substance changes from a liquid into a solid by decreasing heat energy
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taking heat away from water means decreasing heat energy of the water
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temperature changing can cause phase changes
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water is a kind of substance
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air temperature is a kind of temperature
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a phase change is when a substance changes from one state of matter into another state of matter
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solid is a kind of state of matter
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copper is a kind of metal
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a metal is usually a solid at room temperature
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a boy stands in the sunlight
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an object blocking light causes a shadow
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sunlight is a kind of light
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if an object is in the light then that object is blocking the light
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a boy is a kind of object
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shadow of an object can be seen by eyes
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the metal railroad tracks are out during the day
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length is a part of size
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temperature increases during the day
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as temperature during the day increases , the temperature in an environment will increase
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as the temperature of an object increases , the size of that object will increase
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as the temperature of an environment increase, the objects in the environment will increase in temperature
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air is a kind of gas
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if gas is heated then that gas will expand / rise
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if a material is heated , then the material will expand
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the water is warm
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if a thermal conductor / an object is exposed to a source of heat then that conductor / that object may become hot / warm
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metal is a kind of material
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a metal lid is put under warm water
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if the lid of a container expands then that container will be easier to open
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a hot / warm something is a source of heat
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substances are made of molecules
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a gas is heated and its temperature increases
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as the temperature of a substance increases , the molecules in that substance will move faster / farther apart
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gas is a kind of substance
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as the temperature increases, the particles in the matter will move faster and farther apart
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a copper wire is a kind of matter
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objects are made of substances
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increasing heat causes thermal expansion
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as the heat of an object increases , the mass of the object will stay the same
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water is a kind of object
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objects are made of matter
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mass is a property of matter
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volume is a property of matter
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matters are made of atoms
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a redwood tree is a kind of object
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objects are made of matter
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water is a kind of object
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aluminum is a kind of object
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a valley quail is a kind of object
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matter is made of atoms
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atom is a kind of particle
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a protractor is a kind of tool
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a protractor is used for measuring the angles of a triangular object
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a balance is used for measuring mass of a substance
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a balance is a kind of instrument
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frosting is a kind of substance
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a balance is used for measuring mass / weight of an object / of a substance
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student is trying to compare the mass of two small rocks
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a rock is a kind of object
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mass is a property of objects / matter
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comparing a property of two objects requires knowing the property of each object
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a balance is a kind of instrument
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a balance is a kind of tool
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a balance is used for measuring the mass of an object
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a balance is used for measuring the mass of an object
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a balance is a kind of tool
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weight is the force of gravity acting on an object
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a student is a kind of object
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a scale is used for measuring weight
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the density of a liquid can be calculated by dividing the mass over volume
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a graduated cylinder can measure a liquid's volume
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density can be used to predict whether a liquid will float on water or sink under water
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a balance can measure a liquid's mass
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