Earth and Moon Quiz

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Across
  1. 2. the earth's crust is mostly made of rocky material called ______
  2. 4. the _________ ____________ is located in the stratosphere and protects us from UV radiation
  3. 5. the inner most layer of the Earth that is mostly made of iron
  4. 9. When a moon slows down to the point that only one side faces its planet, it is _____________ __________.
  5. 10. Earth's early atmosphere was created by _____________, which spewed out methane, ammonia, sulfur, and carbon dioxide
  6. 12. ______ tides happen when the moon and sun are perpendicular to each other
  7. 14. when the moon is more than half full
  8. 15. the dark areas of the moon filled with basalt
  9. 17. the layer of the atmosphere closest to Earth where weather occurs
  10. 19. a ________ moon is shrinking in size
Down
  1. 1. the layer of the atmosphere that protects us from meteors
  2. 3. ________ _________ belts are belts of radiation trapped around a planet due to its magnetic field
  3. 5. when the moon is less than half full
  4. 6. a ________ moon is growing in size
  5. 7. Earth is 4.6 ________ years old
  6. 8. When the Earth was young and molten its layers separated by density, a process known as _______
  7. 11. _______ tides happen when the Moon and Sun are in alignment
  8. 13. to have a magnetic field, a planet must have a ________ rotational speed
  9. 16. A ______ __________ causes the highest high tides and lowest low tides
  10. 18. when a meteor hits the moon at high impact, it may have material that splashes out and creates ______