Across
- 2. and hard more resistant rock. The weaker rock wears away faster and leaves the harder
- 4. Flat deposit of rocks that can be thick or thin, But, always extend over a large area.
- 8. small representative pieces of the observed item.
- 9. a representation of an object or a system that is too large/small, fast/slow, dangerous
- 10. Lower elevation area where sediments deposit
- 11. means level like a floor, anot higher, on one side or the other.Principle of original horizontality: layer of sediment are generally deposited in a flat floor like
- 15. Largest division of geological time.
- 16. interruption in the normal sequence of deposition.
- 18. of rock, but that the kinds and sequence can be recognized from one location to another.
- 24. the removal and transportation of loose earth material.
- 25. costly to explore directly.
- 26. the idea that rock layers get older the closer they are to the bottom of a
- 27. of rocks.
- 28. Fossil: Lived for a relatively short amount of time and in many places.
- 29. are the particles of earth material that settled out of the water.
- 35. characteristic of the rock formations.
- 36. to find a relationship or connection between rock layers from two or more locations.
Down
- 1. one type to another type.
- 3. common mineral composed of calcium, carbon, and oxygen. Reacts with HCL acid.
- 5. the vertical distance above sea level.
- 6. is the settling out of eroded earth material.
- 7. means “changed” rock that has changed
- 8. Rock that is made up of sand particles.
- 12. Rock that contains calcite.
- 13. is a large nearly level area of land that has been uplifted or elevated above the
- 14. rock layer composed of more than one
- 16. the idea that the way things happen today are the same way
- 17. Erosion: occurs where a mountain or plateau is made out of both soft weak
- 19. is any remain, trace, or imprint of a plant or animal that has been preserved in the
- 20. area.
- 21. CaCO3 This formula of carbon and oxygen is carbonate.
- 22. resistant rock behind.
- 23. broad spans of time based on the characteristics of the life that was present at that time.
- 30. igneous rock that cooled once it reached Earth’s surface.
- 31. igneous rock that has cooled under earth surface.
- 32. crust since past geological time.
- 33. shorter spans of time than era’s divided by major events in Earth’s crust and/ or on the
- 34. is the material that glues particles together.
- 37. have always happened. The present is the key to the past.