The Solar System and the Earth

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Across
  1. 4. When plates are coming together, that's when we get ______________
  2. 5. This is the closest planet to the Sun
  3. 7. When plates get stuck together and move again, the pressure that gets released can cause a ______________
  4. 8. This is a broken piece of an asteroid or comet
  5. 9. This is the thickest layer of the Earth
  6. 10. This is how many rings Neptune has
Down
  1. 1. This planet has the shortest day
  2. 2. When tectonic plates are spreading apart, that's when we get _______________
  3. 3. The Earth's crust is made of many ___________
  4. 6. This is made of rock, dust, and ice and orbits the Sun
  5. 7. This is the only known planet with water on its surface