8th Grade 2nd Semester Extra Credit

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Across
  1. 1. Tsunami warning sign
  2. 5. Molten rock below Earth's surface
  3. 6. 78% of Earth's atmosphere
  4. 8. Oldest rocks are on the bottom
  5. 9. Heat transfer from the sun
  6. 11. Kinetic energy of air molecules
  7. 13. Most common cause of a tsunami
  8. 14. Hot spot volcano chain
  9. 18. 75% of Earth's active volcanoes located here
  10. 20. Climate that is cold year-round
  11. 21. Push or pull
  12. 25. Front represented by a red line with semicircles
  13. 26. Fossil that shows evidence of past activity
  14. 29. Seismic waves that cannot travel through liquid
  15. 30. Temperature at which clouds or fog can form
  16. 31. Negative particle
Down
  1. 2. Mountain-like volcano
  2. 3. Cause of dinosaur extinction
  3. 4. Moon phases that are decreasing from a full moon
  4. 7. Lowest layer of the atmosphere
  5. 10. Eclipse in which Earth's shadow blocks the moon
  6. 12. Most tsunamis occur here
  7. 14. All of Earth's water
  8. 15. Exact, numerical age of a fossil
  9. 16. Measurement that the is affected by amount of gravity
  10. 17. Longest unit of geologic time
  11. 19. Scale to measure earthquakes
  12. 22. Beginning of fall or spring
  13. 23. Different amounts of neutrons
  14. 24. Newton's Law - every action has an equal but opposite reaction
  15. 25. Hemisphere tilted away from the sun
  16. 27. Cause of Earth's day & night
  17. 28. Distance divided by time