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Unit 3 Review

Quiz by MEGAN REED

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18 questions
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  • Q1
    How do volcanoes form?
    when oceanic plates move under continental plates at a convergent boundary (subduction)
    30s
  • Q2
    Scientists digging near a riverbed find fossils of many organisms in the top layers. As they dig into deeper layers, there are no fossils of fish. Why?
    During an earlier time period, a river did not run through the area
    30s
  • Q3
    Where do activities such as earthquakes and volcanic eruptions occur?
    Along plate boundaries
    30s
  • Q4
    Where do scientists find evidence that the Earth's crust has been lifted above its original level?
    fossils of sea animals found on mountaintops
    30s
  • Q5
    What causes earthquakes?
    the movement of tectonic plates that release energy
    30s
  • Q6
    What three pieces of evidence supported Wegener's theory of continental drift?
    fossils, glacier evidence, fit of the continents
    30s
  • Q7
    Boundary where two plates collide
    Convergent boundary
    30s
  • Q8
    Boundary where two plates move apart
    Divergent boundary
    30s
  • Q9
    Where do most volcanoes occur?
    Convergent plate boundaries
    30s
  • Q10
    What process occurs when an oceanic plate pushes beneath a continental plate?
    Subduction
    30s
  • Q11
    Magma rises to become new oceanic crust where
    two plates separate and move apart from one another.
    30s
  • Q12
    How do mountains form?
    Two continental plates collide
    30s
  • Q13
    How does the mantle cause Earth's plates to move?
    Convection currents
    30s
  • Q14
    Why do many earthquakes and volcanoes occur along the Ring of Fire?
    There are many active plate boundaries in that area
    30s
  • Q15
    What is the main cause of seafloor spreading?
    new rock forming between two crustal plates at a mid-ocean ridge
    30s

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