Boundary and Volcanoes-P2

Boundary and Volcanoes-P2

By Restie Carullo

Subduction Zone

addition of water​

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Multiple Choice

 

How does the addition of water help in melting solid rocks???

• water strengthens the bonds of solid rocks but causes them to melt at extreme temperatures

• water weakens the heat in the convergent boundary causing the rocks to melt at lower temperatures

• water weakens the bonds of solid rocks causing them to melt at lower temperatures

• none of the choices

Multiple Choice

Why is there no volcano being formed within two continental lithosphere in a convergent boundary?

• There’s subduction between two continental plates but magma cools eventually

• It’s impossible to have two continental plates in a convergent boundary

• Oceanic lithosphere resist subduction

• Continental lithosphere resist subduction

Subduction Zone

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Spreading Centers

​Decompression Melting

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Multiple Choice

The core is made up of iron and nickel but why is the outer core liquid and the inner core solid?

• The inner core is experiencing extreme high pressure while the outer core is experiencing high pressure (not that extreme)

• The inner core is experiencing extreme low pressure while the outer core is experiencing low pressure (not that extreme)

• The inner core is experiencing extreme high temperature while the outer core is experiencing high temperature (not that extreme)

• The inner core is experiencing extreme low temperature while the outer core is experiencing low temperature(not that extreme)

Multiple Choice

How is partial melting possible through decompression melting?

• increase of heat

• Increase of pressure

• reduction of pressure

• flux melting

Spreading Centers

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Hotspots

​increase of temperature

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Hotspots

​add heat

Hot Spot Volcanoes like Hawaii occur where deep-seated “mantle plumes” bring hot rock up from the core-mantle boundary.​ Mantle rock is both solid and capable of convection, just as solid ice can flow downhill in a glacier!The rise in temperature allows partial melting in the aesthenosphere, generating hot, runny basalt magmas that are typical of this kind of volcanism,

Multiple Choice

Which of the following is NOT true about hotspots?

• It moves with the motions of plates.

• It is also known as Intraplate Volcanism.

• It is located far from plate boundaries.

• Hawaiian Islands are formed due to hot spots.

Multiple Choice

Which of the following does NOT involve formation of volcanoes?

• Divergent

• Transform

• Convergent

• Hotspots

The End!

Be ready to take your first quiz next meeting.