Across
- 1. the material that forms Earth's surface
- 4. Jupiter, Saturn, Uranus, and Neptune
- 6. the force that opposes the motion of one surface
- 8. water that flows over ground surface instead of soaking into the ground
- 9. a big body of air
- 11. rian that is acidic
- 14. a change to the atmosphere that has harmful effects
- 15. a push or pull exerted on an object
Down
- 2. the layer of rock that forms Earth's outer layer
- 3. the combined force of attraction
- 5. a way of learning about natural world
- 7. the ability to do work or to cause change
- 10. the smallest unit of a element
- 12. where weather occurs
- 13. Mercy,Venus,Earth,and Mars