EARTH-MOON SYSTEMS

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