Across
- 1. A change in matter that does not form a new substance
- 6. An object that energy can flow through quickly
- 7. A material that conducts heat poorly
- 9. The circular movement of a fluid caused by heating
- 13. A living thing made up of a single cell
- 14. When the warmer matter rises and the colder matter sinks
- 16. The process in which radiation bounces off an object
- 17. A substance with a fixed shape or volume
- 18. Any substance that can flow
- 19. An atom or molecule
- 20. The smallest unit of life
Down
- 2. The process in which radiation is soaked up by an object
- 3. Any object that takes up space and has mass
- 4. When two objects touch and transfer heat energy
- 5. A structure in a cell that performs a particular function
- 8. The process in which radiation passes through an object
- 10. When waves of heat are transmitted from an object
- 11. energy The energy in an object that determines its temperature
- 12. Energy a moving object has because of its motion
- 15. A change in matter that forms one of more new substances