EARTH-MOON SYSTEMS
Across
- 5. weather occurs in this layer.
- 7. layer with auroras
- 10. naturally occurring solid composed of minerals and sometimes other materials such as organic matter
- 12. contains a mixture of nitrogen, oxygen, and smaller amounts of other gases.
- 13. Earth system that contains all living things
- 14. upper limit of our atmosphere.
- 15. when Earth’s rotation axis is tilted directly toward or away from the Sun
Down
- 1. the solid part of Earth
- 2. meteor or rock fragments burn up in this layer
- 3. periodical rise and fall of the oceans’ surfaces caused by the gravitational force between Earth and the Moon and the Sun.
- 4. many jet aircrafts fly in this layer
- 6. the frozen portion of water on Earth’s surface
- 8. the system containing Earth’s liquid water
- 9. is the series of processes that move phosphorus among Earth systems.
- 11. is the series of processes that continuously move carbon among Earth systems