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Chapter 7: Plate Tectonics Jeopardy

Chapter 7: Plate Tectonics Jeopardy . By: Meghan Froemming. JEAPORDY!!!. What is the layer of earth called that’s made up of the rocks basalt and granite?. crust. As you go deeper beneath earth’s surface, what happens to the temperature and pressure beneath the surface?.

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Chapter 7: Plate Tectonics Jeopardy

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  1. Chapter 7: Plate Tectonics Jeopardy By: Meghan Froemming

  2. JEAPORDY!!!

  3. What is the layer of earth called that’s made up of the rocks basalt and granite? • crust

  4. As you go deeper beneath earth’s surface, what happens to the temperature and pressure beneath the surface? • Temperature increases and pressure increases

  5. How do geologists study earth’s interior? • Seismic waves

  6. List the layers of the earth starting at the surface and going towards the center? • Crust • Mantel • Core

  7. Describe the crust: • The thin and solid outer most layer of the earth above the mantel

  8. Describe the mantle: • The layer of rock between the earth’s crust and core

  9. Describe the core: • The central part of the earth below the mantle

  10. What is the lithosphere? • The solid, outer layer of the earth that consists of the crust and the rigid upper part of the mantle

  11. What is asthenosphere? • The soft layer of the mantle on which the tectonic plates move • It is made of solid rock that flows very slowly

  12. What is the mesosphere? • The strong, lower part of the mantle between the asthenosphere and the outer core

  13. What is the outer core? • The liquid layer of earth’s core that lies beneath the mantle and surrounds the inner core

  14. What is the inner core? • The solid layer of earth’s core that extends from the bottom of the outer core to the center of the earth

  15. What is a compound? • A substance composed of two or more elements

  16. What are tectonic plates? • Pieces of the lithosphere that move around on the top of the asthenosphere

  17. What is ridge push? • Plate motion due to gravity

  18. What is slab pull? • Plate motion due to higher densities

  19. Where are the convection currents located that move earth’s plates? • The asthenosphere which is located in earth’s upper mantel

  20. What is a convection current? • Plate movement due to the heating and cooling of rock

  21. What happens to convection currents when the heat source is removed? • They stop because there isn't heat to keep them moving

  22. What do we call a boundary where two plates collide? • Convergent boundary

  23. If two continental plates collide, what is produced? • mountains

  24. What do we call a boundary where two plates slip past each other? • Transform boundary

  25. What type of rock primarily makes up oceanic crust? • basalt

  26. What type of rock primarily makes up continental crust? • granite

  27. What is the name of the boundary where two plates are moving away from each other? • Divergent boundary

  28. What happens to a plate, as it is subducted into the mantle? • It melts

  29. What type of boundary occurs at a subduction zone? • Convergent boudary

  30. Where is old crust destroyed? • At subduction zones

  31. What does Wegener’s theory of continental drift state? • The continents once formed a single landmass, broke up, and drifted to their present locations.

  32. What is the name of the supercontinent that existed millions of years ago called? • Pangaea

  33. What do we call any trace of an ancient organism preserved in rock? • Fossil

  34. What are the three categories of evidence Wegener used to support his theory of continental drift? • Fossils, similar types of rock and evidence of the same ancient climate conditions were found on several continents

  35. Why was Wegener’s theory rejected by geologists of his time? • From the calculated strength of the rocks, it didn’t seem possible for the crust to move this way

  36. What do we call the longest chain of mountains in the world? • Mid-ocean ridges

  37. In the mid-1990’s what technology did scientists use to map the ocean floor? • Sonar

  38. In sea-floor spreading where on the ocean floor does molten material erupt onto the ocean floor? • Mid-ocean ridge

  39. What were scientists able to determine by taking drilling samples of the ocean floor? • Age of the rocks

  40. What did deep diving submersibles observe at the mid-ocean ridge? • Pillow lava

  41. What is the term used to describe ocean floor sinking into a deep-ocean trench? • Subduction

  42. As new oceanic crust cools, what happens to its density? • It increases

  43. What is the force that causes Earth’s plates to move? • Convection currents

  44. What is the name of the theory that states that Earth’s plates are in constant slow motion? • Plate tectonics

  45. What geological feature is formed at a divergent boundary? • Mid ocean ridge(in water) • Rift valley(on land)

  46. What is being created at a mid ocean ridge? • New crust is created

  47. Describe the three ways mountains are formed? • Volcanic mountains are formed by magma at a convergent boundary • Folded mountains are formed by the crust being folded at a convergent boundary • Fault-block mountains, form when tension causes large blocks of the earths crust to drop down relative to other blocks

  48. Where is new crust created? • Mid ocean rift

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