Across
- 3. The principle that states the oldest rocks are found at the bottom.
- 5. The type of rock that fossils are found in
- 6. The preserved remains of a once-living thing
- 8. The preserved evidence of an organism's activity or behavior
- 11. The type of rock that forms intrusions that cut across rock layers
- 14. A fossil that is an impression of an organism in rock
- 15. The principle that states that is one geologic feature cuts across another, the feature it cuts across is older.
- 16. When rock layers bend due to pressure being exerted on them at convergent boundaries
- 19. Using the ages of nearby rocks and geologic features to determine age by comparison
- 20. The movement of these causes rocks to become deformed or disturbed
- 21. When rock layers are shifted due to being pushed up or down unevenly
Down
- 1. Represents a gap in the rock record due to erosion.
- 2. When the original tissues of an organism are preserved
- 4. The principle that states that most rock forming material is deposited in horizontal layers
- 7. The principle that states that rock that is encased in another rock is older.
- 9. The principle that states that sediments are deposited in continuous sheets in all directions
- 10. When sediments fill a mold fossil, get compressed, and harden into another fossil
- 12. A crack or fracture in rock that allows rock masses to slide past each other
- 13. A collection of all of the fossils ever discovered on Earth
- 17. Occurs when a dead organism is compressed over time, releasing the liquids and gases inside them. This process leaves behing a dark brown or black stamp of the organism
- 18. When minerals replace an organism's original material and harden into rock