Fossils

2. A gap in the geologic record, some rock layers have been destroyed and are lost forever
5. How many years have passed since the rock/fossil formed
6. An organism that no longer exists
7. Loose dirt/soil that eventually hardens into stone and contains fossils
14. The entire collection of fossils and past life that we have gathered
15. The age of rocks compared to other rocks
16. Lava that gets stuck inside of the planet (it is always younger than every rock layer that it touches/burns into)
17. The change of living things over time
18. Lava that makes it out to the surface of the earth and then hardens (always younger than the rocks below it)
19. The Law of ____________ states that the oldest rocks are at the bottom and the youngest are at the top
20. Turned into stone, there is no organic material left

1. Entire organisms that have been preserved in ice or mummified (Dogor)
3. A method of finding the age of something, only usable on things that used to be alive
4. a break in the earth's crust
8. fossils need a long amount of this in order to form
9. The solid copy of the shape of an organism (ice from an ice cube tray)
10. A hollow area in sediment in the shape of an organism (ice cube tray)
11. A scientist that studies rocks
12. Evidence of the life or activity of an organism but NOT a piece of the actual organism
13. A scientist who studies fossils