*GCA_U3 Plate Boundaries 1

What type of boundary is this?

• Transform boundary
• Divergent boundary
• Convergent boundary

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U3 Plate Boundaries 1

What type of boundary is this?

• Transform boundary
• Divergent boundary
• Convergent boundary

Tags

U3 Plate Boundaries 1

What type of boundary is this?

• Transform boundary
• Divergent boundary
• Convergent boundary

Tags

U3 Plate Boundaries 1

What is the process that continually adds new crust to the ocean floor along both sides of the mid-ocean ridge?

• Continental drift
• Subduction
• Seafloor spreading
• Plate tectonics

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U3 Plate Boundaries 1

In sea floor spreading, molten material rises from the mantle and erupts. What happens?

• Magma cools into sedimentary rock.
• Oceanic crust is destroyed.
• Continental crust is formed.
• New oceanic crust is formed.

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U3 Plate Boundaries 1

What is the process by which the ocean floor sinks beneath a deep ocean trench and back into the mantle?

• Subduction
• Continental drift
• mid-ocean ridge

• Erosion

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U3 Plate Boundaries 1

The large plates move across the surface of the Earth by what process?

• radiation

• condensation

• convection

• conduction

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U3 Plate Boundaries 1

Here is a picture of sea-floor spreading. How are the ocean crusts moving?

• no movement

• sliding

• converging

• diverging

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U3 Plate Boundaries 1

When an oceanic crust meets a continental crust, what occurs?

• Both crusts are subducted down into the mantle.

• The two crusts converge forming folded mountains such as the Himalayas.

• The oceanic crust moves over the continental crust resulting in volcanoes.

• The oceanic crust moves under the continental crust resulting in volcanoes.

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U3 Plate Boundaries 1

What evidence did Wegener use in his theory?

• mountain ranges and coal deposits line up across continents

• Continents and fossils fitting together/matching-up like puzzle pieces

• glacier scars and evidence from temperature

• all of the above

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U3 Plate Boundaries 1