Science 8 – Helgeson
Convergence Packet
Name _______________________ Period _____
OCEANIC-CONTINENTAL CONVERGENCE
1. Explain what happens to oceanic crust when oceanic and continental
plates converge.
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2. When oceanic and continental plates converge, what do you call the
subduction zone that forms?
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3. What change on the continent’s surface may be caused by the
convergence of these plates? Explain the steps that bring about this change.
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4. The Andes are volcanic in nature. The Himalayas are not volcanic. One
of these mountain ranges was formed by oceanic-continental convergence.
How do you know which one?
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Science 8 – Helgeson
Convergence Packet
Name _______________________ Period _____
OCEANIC-OCEANIC CONVERGENCE
1. Explain how symbols indicate that the diagram shows a convergent
boundary and not a divergent boundary.
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2. Describe what one oceanic plate must do when two tectonic plates
converge in mid-ocean.
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3. What happens to the subducted crust when it is pushed deep into the
lithosphere? Explain how this may affect the surface of the plate that was
not subducted.
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4. Japan is made up of islands formed by oceanic-oceanic convergence.
What type of islands would you expect to find in Japan? Why?
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5. Explain where the subduction zone in an oceanic-oceanic convergence is
located.
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6. Compare and contrast oceanic-oceanic convergence and oceaniccontinental convergence.
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Science 8 – Helgeson
Convergence Packet
Name _______________________ Period _____
CONTINENTAL-CONTINENTAL CONVERGENCE
1. Explain what the arrows on the diagram show.
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2. Explain why this diagram doesn’t show a subduction zone.
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3. Describe how mountains are formed in this type of plate movement.
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4. Explain how mountains formed by the convergence of continental plates
differ from those formed by the convergence of oceanic plates or of an
oceanic plate with a continental plate.
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5. Locate the Himalayas on a world map. Explain how their location would
lead to the hypothesis that they could have been formed by continentalcontinental convergence.
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