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Forces and Motion #2
| Question | Answer |
|---|---|
| a material that allows heat to pass through it easily | conductor |
| a material that prevents heat from passing through it | insulator |
| a measure of the amount of matter in an object | mass |
| the force of gravity between Earth and an object | weight |
| a measure of how much space an object takes up (can be calculated by L x W x H) | volume |
| the upward push of a liquid on an object placed on it | buoyancy |
| a measure of how tightly packed the matter in an object is | density |
| to shrink, as when a material gets cooler | contract |
| to spread out, as when a material gets hotter | expand |
| matter in this forms keeps their shape and the molecules are linked in organized positions | solid |
| matter in this form take the shape of their containers and the molecules can slide around each other | liquid |
| matter in this form fill the volume of their containers and the molecules move around the most | gas |
| the changing of a liquid into a gas | evaporation |
| the changing of a gas to a liquid | condensation |
| the particular temperature for each substance at which it changes state from a solid to a liquid | melting point |
| the particular temperature for each substance at which it changes from a liquid to a gas | boiling point |
| when a substance changes state from a liquid to a solid | freezing point |
| a change of matter in size, shape, or state without any change in identity | physical change |
| a change of matter that occurs when atoms link together in a new way, creating a new substance different from the original substance | chemical change |
| one of the three forms that matter can take- solid, liquid, or gas. | states of matter |
| the flow of heat through a material, causing hot parts to rise and cooler parts to sink | convection |
| the giving off of infrared rays through space | radiation |
| the passing of heat through a material while the material itself stays in place | conduction |
| anything that has mass and takes up space | matter |