Across
- 4. The measure of the amount of matter in an object.
- 7. Turning lights off when leaving a room is an example of _________.
- 9. A piece of land where garbage is dumped.
- 10. Rocks that contain a useful or valuable substance.
- 11. Something found in nature and is used by people.
- 14. Energy from water.
- 15. Anything that takes up space and has mass.
- 17. Energy from wind.
- 18. Energy from the sun.
- 19. A tool you can measure mass.
Down
- 1. A characteristic of matter that you can sense without changing the kind of matter it is its ___ property.
- 2. Natural resources used to provide energy
- 3. The measure of how hot or cold matter is.
- 5. Using an object more than once is ________ an object.
- 6. A unit you can measure mass.
- 8. The addition of substances to the environment that may harm living things.
- 11. Resources not able to be replenished by nature quickly.
- 12. To return something to the way it was before it was changed or damaged.
- 13. Using land in a responsible way; changing a landfill to a park
- 16. Resources that can be replenished quickly by nature over time.
- 20. Using a resource responsibly so that it is not wasted or damaged.