Geological Time

12345678910
Across
  1. 2. the process in which a radioactive atom spontaneously gives off radiation in the form of energy or particles to reach a more stable state
  2. 3. a mineralised ancient oraginsm that has gone through a lot of heat pressure and time
  3. 6. the process of determining a more accurate age of a rock by using its pyhiscal properties
  4. 7. different forms of a element
  5. 8. an immeasurably or indefinitely long period of time
  6. 9. the process of determining if one rock or geologic event is older or younger than another, without knowing their specific ages
  7. 10. a law that says that any cut in the layers (rifts) is younger than its surrounding
Down
  1. 1. a law that states that if a rock is included in another rock, the rock that is in another rock is older than the rock it is in
  2. 4. The amount for time it takes for half of a remaining isotope to decay to a daughter product.
  3. 5. a law that states that the botto layer is the oldest and the newest layer is the youngest