Across
- 3. Anything that takes up space and has mass.
- 8. Breaking down of rocks into smaller pieces.
- 9. Rate at which energy is used.
- 10. Rain mixed with harmful gases from pollution.
- 14. Stored energy
- 16. Energy of motion.
Down
- 1. A force that holds molecules together.
- 2. a substance that starts a chemical reaction.
- 4. Ability to do work.
- 5. Water that flows over land after rain.
- 6. The loss of nutrients from soil by water.
- 7. a substance that forms as a result of a chemical reaction.
- 11. The process of releasing energy from food.
- 12. Also known as the hydrologic cycle or hydrological cycle.
- 13. Study of energy
- 15. It is needed by all known forms of life.