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Science Unit 4
Vocabulary Words
| Term | Definition |
|---|---|
| solid | Matter that has a definite shape and volume. |
| liquid | Matter that has a definite volume but no definite shape. |
| gas | Matter that has no definite shape or volume. |
| water vapor | Water in its gas form. |
| heat transfer | The process in which heat moves from one substance to another. |
| atmosphere | A blanket of gases and tiny bits of dust that surrounds Earth. |
| oxygen | The gas in air that you and many living things need to live. |
| thermal energy | The energy of moving particles of matter |
| conductor | A material which heat moves through easily. |
| volume | A measure of how much space an object takes up. |