Earth's Spheres

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Across
  1. 6. Earth's dense, center layer
  2. 7. The invisible gasses that surround Earth
  3. 10. It comes from the Greek energeia, or activity meaning to do work
  4. 11. 97% of all liquid on Earth is this
  5. 13. 21% of the Earth is Ultraviolenthis gas
  6. 15. Permanently frozen layer under Earth's surface
  7. 17. Hot layer of rock between Earth's core and crust
  8. 19. All the matter, energy, and processes within Earth's boundary
Down
  1. 1. The part of the Earth that is liquid
  2. 2. The type of rays that are absorbed and reflected by Earth's atmosphere
  3. 3. The mostly solid, rocky, part of Earth
  4. 4. Made up of all living things on Earth
  5. 5. This is a result of the increase of Earth's temperature, greenhouse gases, and melting polar ice
  6. 8. A way to keep track of energy transfers into and out of the Earth system
  7. 9. 78% of the Earth is made up of this gas
  8. 12. Anything that takes up space and can be weighed
  9. 14. All of the frozen parts of Earth
  10. 16. The spheres need to do this in order for life to be possible
  11. 18. Thin, rigid, outermost layer of Earth