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Earth Structure Vocabulary: Plates & Boundaries in Motion

Explore oceanic vs. continental crust, plate boundaries, seismic waves, and Earth's interior composition. Learn about Pangaea, convection cells, fault lines, and more.

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Earth Structure Vocabulary: Plates & Boundaries in Motion

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  1. Plates EQ Earth Structure Vocabulary 100 100 100 100 200 200 200 200 300 300 300 300 400 400 400 400

  2. Name three things produced at a convergent ocean and continental boundary.

  3. Trench, mountain, volcano, subduction, EQ

  4. Compare the density, thickness and composition that each type of crust is made of

  5. Oceanic – thinner, denser, basaltContinental – thicker, less dense, granite

  6. Name of the supercontinent (spelled correctly!) and one piece of evidence for its existence

  7. Pangaea; continental fit, fossil or rock correlation, coal in Antarctica

  8. Which type of plates and plate boundary interaction produces new ocean crust? What is the orientation of the Earth’s magnetic field called?

  9. Divergent ocean and ocean; magnetic polarity

  10. Name the two types of waves produced by an EQ and compare their speed, direction of movement, and damage production.

  11. P – faster, compressional, less damageS- slower, side to side (shear), more damage

  12. How far can an S wave travel in 17 minutes?

  13. 6,000 km

  14. What is the lag for an EQ epicenter of 4,600 km

  15. 6:10

  16. What is the origin time of an epicenter that is 1,800 km away and the P wave arrives is 10:06:40

  17. 10:03:00

  18. What type of plates and boundary interactions produce a chain of volcanic islands? Give the name of one such chain.

  19. Ocean and ocean convergence; alleutian or mariana islands

  20. Name the earth’s layer that is the location of the convection cells. What drives them?

  21. The asthenosphere; density differences (unequal heating)

  22. What do seismic waves tell us about the Earth’s interior? What do meteorites tell us?

  23. Solid vs. Liquid; iron and nickel composition

  24. What is the depth and temperature of the interface between the inner and outer core. Label your answers.

  25. 5,100 km and 6,300 degrees C

  26. Complete this statement:The Earth’s outer core is _______, which causes P waves to be _____ and S waves to be ______ producing a ________ ______

  27. Liquid, refracted (bent), absorbed, shadow zone

  28. The time it takes for a P wave to go a certain distance is ______ ______. The difference in P and S arrival is called the ____ _____. The time the EQ occurred is called the _____ _____.

  29. travel time; lag time, origin time

  30. The word for connecting fossils, rock types or structures in one location relative to another.

  31. correlation

  32. Alfred ______ discovered the idea of _____ _____, which was later replace with the theory of _______ ________.

  33. Wegener, Continental Drift, Plate Tectonics

  34. A crack or break in the crust

  35. Fault

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