Crossword puzzle PT #4

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Across
  1. 1. The discovery of similar_______ on different continents helped to develop the idea of Pangea
  2. 5. The earth outermost rigid layer is called______
  3. 7. What is the Earth outermost solid layer,consisting of both continental and oceanic types,and where most human activity and geologic process occur?
  4. 8. Movement occurs when plates move alongside each other in different directions
  5. 11. Layers are deposited in nearly horizontal layers
  6. 12. A rock mass that contains pieces of rocks called_______ are younger than the other rock masses
  7. 16. What part of the Earth is primarily composed of liquid iron and nickel,responsible for generating the plate's magnetic field through convective motion?
  8. 18. Also known as guide fossils or indicator fossils,are fossils used to define and identify geologic periods
  9. 19. Tells the order in which events occurred and the exact amount of time that has passed since they occurred
  10. 20. That all geologists use in decoding or deciphering the spatial and temporal relationships of rocks layers
Down
  1. 2. A fault or dike-a slab rock cuts through another rock
  2. 3. Happens when plates pull apart from each other where the earth's tectonic plates are moving apart
  3. 4. The first recognized by William Smith different strata contain particular assemblage of fossils by which rocks may be identified and correlated over long distances
  4. 6. The branch of geology that deals with the description,correlation, and interpretation of stratified sediments and stratified rocks on and within the Earth
  5. 9. What is the layer of the Earth responsible for convection currents and the movement of tectonic plates?
  6. 10. The largest and heaviest rock layer that settled first at the bottom is the oldest rock layer
  7. 13. Driven by mantle convection, the lithospheric plates ride over soft,ductile layer called________
  8. 14. Occurs when plates crush into each other and land crumples,forming trenches and mountain
  9. 15. Is composed of semi-liquid hot molten rocks located beneath the Earth, specifically in the melted mantle rock and oceanic plate
  10. 17. Refers only to the order in which events occurred