Geology and the Rock Cycle

1234567891011121314151617181920212223
Across
  1. 4. contacts between rock that show a break in the geologic record caused by a period of erosion or pause in sediment accumulation
  2. 7. rock formed after weathering, erosion, deposition, compaction and cementation
  3. 11. describes what happens in nature under certain conditions
  4. 13. exposed rock formation at the earth’s surface
  5. 14. one scientist conducts an experiment multiple times to increase accuracy.
  6. 16. method of determining the age of an object based on its physical characteristics
  7. 18. rock formed under intense heat and pressure
  8. 19. the remains or traces of ancient organisms preserved in geological formations
  9. 20. igneous rock formed above the surface
  10. 21. explains why or how something happens
  11. 22. plant or animal that is preserved in the rock record and are characteristic of a particular geologic time
  12. 23. method of determining the age of organic materials
Down
  1. 1. calendar for events in earth’s history measured in eons eras periods epochs and ages
  2. 2. each layer of rock is older than the layer above it
  3. 3. when eroded sediments come to rest
  4. 5. a group of different scientists perform the same experiment
  5. 6. movement of sediment by wind or water
  6. 8. process where rocks transform from one type of rock to another
  7. 9. minerals harden in cracks between sediments
  8. 10. the variety of life in the world
  9. 12. igneous rock formed below the surface
  10. 15. rock formed by cooling molten rock
  11. 17. breaking down or dissolving of rocks and minerals
  12. 18. a naturally occurring inorganic element or compound with orderly structure and chemical composition