Planets, Moon, and Age of the Earth Review Crossword

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Across
  1. 3. Approximately the time it takes for the Earth to make one revolution around the Sun
  2. 5. large dark patches on the surface of the Moon
  3. 8. Is the age of the rock compared to the age of other rocks around it but that doesn’t say exactly how old you are.
  4. 12. This law explains that the deeper down you go, the OLDER the rocks are…
  5. 18. These particles are used by geologists to determine the absolute ages of rocks.
  6. 19. the planet that spins side-ways
  7. 21. Approximately the time it takes for the Moon to make one revolution around the Earth
  8. 23. the largest planet in the solar system
  9. 24. the planet on which we live
  10. 25. the closest planet to the sun
Down
  1. 1. When magma pushes its way up through the rocks and hardens before it reaches the surface is called…
  2. 2. The time is takes for half of the rock’s particles to deca
  3. 4. Is the number of years since the rock formed
  4. 6. A rock that exists in many places but for a short period of time which this is useful because if the scientists know the age of this rock, they can determine the age of other rock around it.
  5. 7. Over time dead organisms break down and releases particles and energy in this process.
  6. 9. Scientists that study rocks and the materials of the Earth are called…
  7. 10. planet with a surface covered with Rust
  8. 11. Raised areas in white on the surface of the Moon
  9. 13. to make a circle around something else
  10. 14. the farthest planet from the Sun
  11. 15. holes or dents on the surface of the Moon
  12. 16. to spin around on its axis
  13. 17. last 4 planets are known as
  14. 20. the planet that is covered with acid
  15. 22. the planet known for its large ring