Geologic Time Scale Station Lab

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Across
  1. 1. - The age of the rock
  2. 4. - any feature that cuts across a sequence of rocks, is younger than everthing it cuts
  3. 5. - First sine of life on earth
  4. 6. - an undisturbed sequence of rocks, the oldest rocks are on the bottom and the youngest are on the top
  5. 10. - How scientists determine the age of a rock
  6. 11. - the amount of time it takes for half of a remaining isotope to decay
Down
  1. 1. - Earth has calmed down and has stablized
  2. 2. - is any rock or fragments thats included inside antohter rock is older than the rock in which is included
  3. 3. - Dinosaurs, pangea, continetal drift
  4. 7. - The decay of a specific isotope
  5. 8. - our solar system still forming
  6. 9. - 65.5 million years ago to present day