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5 Written questions

5 Matching questions

  1. crust, mantle, core
  2. sea-floor spreading
  3. granite
  4. convection current
  5. rift valley
  1. a the three main layers of Earth
  2. b the process of continually adding new material and land to the ocean floor
  3. c a rock that is usually a light color and has a coarse texture
  4. d a deep valley that forms along the divergent boundary
  5. e the flow that transfers heat within a fluid

5 Multiple choice questions

  1. a layer of molten metal that surrounds the inner core
  2. the theory that states that pieces of Earth's lithosphere are in slow, constant motion, driven by convection currents in the mantle
  3. a dense ball of solid metal
  4. dark rock with a fine texture that normally forms the oceanic crust
  5. a well-tested concept that explains a wide range of observations

5 True/False questions

  1. the force that pulls the continentHeat from what source in Earth causes convection currents?


  2. convectionheat transfer between materials or between materials that are touching


  3. athenospherethe uppermost part of the mantle and the crust together form this part of Earth


  4. radiationthe transfer of energy through space


  5. continental driftthe idea that continents are slowly moving over Earth's surface


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