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5 Written questions

5 Matching questions

  1. convection current
  2. radiation
  3. lithosphere
  4. density
  5. basalt
  1. a the uppermost part of the mantle and the crust together form this part of Earth
  2. b dark rock with a fine texture that normally forms the oceanic crust
  3. c the transfer of energy through space
  4. d a measure of how much mass there is in a volume
  5. e the flow that transfers heat within a fluid

5 Multiple choice questions

  1. the process of continually adding new material and land to the ocean floor
  2. a well-tested concept that explains a wide range of observations
  3. a scientist who hypothesized that all the continents were once joined together in a single landmass and have since drifted apart
  4. a deep valley along the ocean floor beneath which oceanic crust slowly sinks toward the mantle
  5. the three main layers of Earth

5 True/False questions

  1. sonara device that bounces sound waves off underwater objects and then records the echoes of these sound waves

          

  2. athenospherea soft layer below the lithosphere

          

  3. rift valleybreaks in Earth's crust where rocks have slipped past each other

          

  4. plate tectonicsthe theory that states that pieces of Earth's lithosphere are in slow, constant motion, driven by convection currents in the mantle

          

  5. mid-ocean ridgesa deep valley along the ocean floor beneath which oceanic crust slowly sinks toward the mantle

          

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