G8M Social Studies: Destructive Plate Boundaries

What happens to the crust at a destructive plate boundary?

• It is destroyed
• New crust is formed (or ‘constructed’)

What is the oceanic plate and the continental plate doing at a destructive plate boundary?

• The plates are moving towards each other
• The plates are moving apart

Why is oceanic plate forced under continental plate?

• Because the oceanic plate is denser and the continental plate is lighter
• Because the oceanic plate is lighter and the continental plate is denser

Where is oceanic plate forced under the lighter continental plate?

• The subduction zone
• The Mid-Atlantic Ridge

Why does the oceanic plate melt?

• Because of friction
• Because of pressure

What can happen when the oceanic plate melts?

• Earthquakes
• Chain of underwater volcanoes

What is produced when the oceanic plate melts?

• Magma
• Lava

Which layer of Earth has magma?

• The Mantle
• The crust

How does magma get to the surface?

• Through cracks
• Through the subduction zone

From where does the magma erupt?

• A volcano
• An earthquake