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4.20 Unit Test: Plate Tectonics - Part 1

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  • Which two parts of the Earth make up the lithosphere?
    crust and outer part of the mantle
  • What happens at a convergent boundary?
    Earthquakes occur as lithospheric plates move away from each
    Magnetism occurs as lithospheric plates are attracted toward
    Collisions occur as lithospheric plates move toward each oth
    Mountains form as lithospheric plates move side by side past
  • According to the theory of plate tectonics, how do two plates interact to form Earth's largest mountain ranges?
    scrape past each other
    collide
    move apart
    create new plates
  • Which term is described as a flat expanse of ocean floor?
    deep-sea trenches
    abyssal plains
    guyots
    continental shelf
  • At which type of boundary do lithospheric plates collide?
    convection boundaries
    convergent boundaries
    contour boundaries
    gravitational boundaries
  • Which evidence did Wegener make use of to develop the theory of continental drift?
    The Rocky Mountains are taller than the Appalachian Mountain
    Mountains in North America appear to be part of the same cha
    The climate of Siberia has always been the same.
    There is no evidence of glaciers anywhere in South America.
  • Which phrase gives two processes scientists think move the Earth's lithospheric plates?
    convection in the mantle and pressure of magma on the edge o
    gravity acting on the edges of plates and convection in the
    friction between the plate and the asthenosphere and pressur
    gravity acting on the edges of plates and friction between t
  • What are the main causes of convection currents in the asthenosphere?
    density and temperature
    weight and pressure
    density and weight
    temperature and pressure
  • Which term is described as a seamount with a flattened top?
    guyots
    continental shelf
    deep-sea trenches
    abyssal plains
  • What activates a convection current, starting the flow of a fluid?
    heated liquids at Earth’s surface
    cold temperatures at the north pole
    iron-rich rocks in the mantle
    temperature differences in the mantle
  • Which phrase gives two forces scientists believe are responsible for tectonic plate motion?
    gravity acting on the edges of plates and convection in the
    convection in the mantle and pressure of magma on the edge o
    friction between the plate and the asthenosphere and pressur
    gravity acting on the edges of plates and friction between t
  • Which word best describes the hot, weak, inner part of the upper mantle, which can flow?
    crust
    crust and outer part of the mantle
    lithosphere
    core
  • Which term is described as a shelf of undersea land reaching a depth of about 200 meters (656 feet) and extending out from the shoreline?
    deep-sea trenches
    guyots
    abyssal plains
    continental shelf
  • Which phrase best describes of a convergent boundary?
    plates that move toward each other
    plates that move away from each other
    plates that move side by side past each other
    plates that are attracted to each other by gravity
  • Which section is part of the lithosphere?
    crust and outer part of the mantle
  • Alfred Wegener's theory about Earth's past included a supercontinent made up of all the continents put together. Which word named the supercontinent?
    Laurasia
    Americas
    Pangaea
    Gondwanaland
  • Which evidence did Wegener make use of to develop the theory of continental drift?
    There is no evidence of glaciers anywhere in South America.
    Similar fossils were found on different continents.
    The climate of Siberia has always been the same.
    The Rocky Mountains are taller than the Appalachian Mountain
  • Which term is described as a long, narrow depression in the ocean floor?
    deep-sea trenches
    guyots
    continental shelf
    abyssal plains
  • Which part of the mantle is still a solid but flows like a thick, heavy liquid?
    crust
    asthenosphere
    core
    lithosphere