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Across 6. Type of fossil created by sap. 9. A break in the Earth's crust where rocks move passed each other 11. Type of geological dating that uses the layers of rock. 12. hard rocky layer on the outside of the earth. The one we walk on. 13. Type of plate boundary where two plates move towards and smash into each other. 15. Phase in earth development where the earth was hammered by impacts. from 4.6 to about 4.1 bya. 20. This forms when two continental plates collide. Thrust faulting and showing a crunch zone. (2 Words) 24. Type of stress found at a divergent boundary. 25. type of rock nearly all fossils are formed in. 26. Relative Dating law that states that if a layer cuts across another layer. the Layer being cut is older than the layer doing the cutting. 27. Weak putty like portion of the mantle that is right under the crust. 28. Lifeform that is said to have produced the majority of the oxygen in our atmosphere. 30. Type of fault created by a divergent boundary. Rock drops down. 31. The time it takes for HALF of the radioactive sample to decay and become not radioactive. 32. Type of fossil that results from freezing, mummification of the actual organism. (2 Words) 33. Name for a chunk of crust floating on the mantle. 35. Once the protostar starts fusing atoms together. Officially is one of these. 37. Type of fossil where the original body of the organism has been replaced by minerals and crystals. 38. These in the mantle move the plates as the hot magma rises and moves colder magma away. (2 Words) 42. Large cloud of gas floating in space that could form a star. 43. Type of stress at a convergent boundary. 45. thickest layer of the Earth. Made of magma 47. Cenozoic, Mesozoic, and Paleozoic are examples of ________ in the geologic time scale. 48. name for where two plates meet. (2 Words) 49. Type of plate boundary where the two plates are moving away from each other. 50. Volcanoes are created on the continental crust next to the collision site next to these. (2 Words) 51. What ended snowball/slushball Earth? (2 Words) 52. any preserved evidence of a living organism.

Down 1. name for the solid center of the Earth (2 Words) 2. This forms at a divergent boundary between two continental plates. (2 Words) 3. the force that pulls the nebula dust together into a star. 4. Jurassic, Triassic, Quaternary are examples of ________ in the geologic time scale. 5. Type of plate boundary where plates slide passed each other 7. what geological law states that the oldest layer of rock is the farthest down? 8. Type of fossil that is an impression of an organism or a rock that was formed by filling in an impression of an organism. (3 Words) 10. Name for the current explanation of the beginning of the universe (3 Words) 14. The current explanation of how the moon formed. (3 Words) 16. Majority of the mantle. Lower part of the mantle. (2 Words) 17. Type of fossil that is indirect evidence of an organism like a footprint or poop. 18. Another name for the rocky crust of the earth. 19. Geologic dating that is based on radioactive decay and half-lives. (2 Words) 21. name for the liquid layer around the solid center of the Earth (2 Words) 22. Natural disaster created by transform plate boundaries/slip-strike faults 23. Another name for a reverse fault, where one side of the fault is pushed upwards. (2 Words) 29. This forms at a divergent boundary between two oceanic plates. (2 Words) 34. Type of fossil where the original body of the organism has had all of its empty pores and space filled with crystals or minerals. 36. what happens when a nebula condenses to a spinning disc. 39. When one of the plates in a collision is shoved down into the mantle. 40. When two ocean plates collide, this form next to the subduction zone. (2 Words) 41. type of stress found at a transform plate boundary 44. general lifeform that ruled the Earth from 3.5 bya to 565 mya. 46. Marks a subduction zone. Deepest parts of the ocean.