Earth and Earth Subsystem Crossword Puzzle

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Across
  1. 4. The regions of Earth where living organisms exist.
  2. 7. The force that attracts a body toward the center of the Earth.
  3. 10. A system that exchanges both energy and matter with its surroundings.
  4. 11. The movement of energy through an ecosystem.
  5. 13. The cycle by which carbon is cycled through the Earth's systems.
  6. 15. Energy from the sun.
  7. 17. Large pieces of Earth's lithosphere that move over the asthenosphere.
  8. 18. The solid part of Earth, including rocks and minerals.
  9. 19. The breaking down of rocks, soil, and minerals.
  10. 20. The process by which soil and rock are removed from the Earth's surface.
Down
  1. 1. continuous movement of water on, above, and below the surface of the Earth.
  2. 2. The planet we live on.
  3. 3. System A system that does not exchange energy or matter with its surroundings.
  4. 5. The layer of gases surrounding Earth.
  5. 6. The rigid outer layer of Earth, including the crust.
  6. 8. A community of living organisms and their physical environment.
  7. 9. All the water on Earth's surface.
  8. 12. The process by which plants convert solar energy into chemical energy.
  9. 14. A system that exchanges energy but not matter with its surroundings.
  10. 16. The long-term average of weather patterns in an area.