Puzzling Earth

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Across
  1. 4. Outer part of the earth.
  2. 5. Current made by moving fluid.
  3. 11. Below lithosphere made of upper mantle.
  4. 12. Ocean.
  5. 13. Largest part of the inside of earth.
  6. 14. Result of radioactive decay.
  7. 15. What is destroyed due to radioactive decay.
  8. 16. Land.
  9. 19. Where two or more continental crusts meet.
  10. 20. Something generated by radioactive decay.
Down
  1. 1. Part of the lithosphere that moves.
  2. 2. A rock that falls from space.
  3. 3. Two or more plates move away from each other.
  4. 6. This goes through the earth due to earth quakes and it can't be seen.
  5. 7. This is in the earth and is 9,392 degrees Fahrenheit.
  6. 8. An unstable nucleus loses energy due to radioactivity.
  7. 9. How you find a half life of an element.
  8. 10. 84% of earths volume.
  9. 17. Two or more plates slide past and nothing happens.
  10. 18. Made of iron and makes magnetic field.