Hotspots Flashcards

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1
Q

What are hotspots

A

Hotspots are small areas away from plate margins with an unusually high heat flow linked to volcanic activity

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2
Q

What occurs at a hotspot

A

At a hotspot, a plume of magma rises from the asthenosphere. The magma pushes through the crust, forming volcanoes at the surface

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3
Q

What happens at continental hotspots

A

As continental hotspots move they become extinct

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4
Q

What happens at oceanic volcanoes

A

Where oceanic volcanoes move away from each other they cool and subside remaining as islands, or if under water they are oceans mounds.

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5
Q

What is an example of oceanic hotspots

A

The Hawaiian islands, extending 2,400 km

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6
Q

What is an example of continental hotspots

A

The Yellowstone is an example of a continental hotspot

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7
Q

How are the volcanic eruptions in a hotspot and provide an example

A

Eruptions are ussually less violent but produce large quantities of lava. This makes them less hazardous but can cause damage and affect peoples live such as the eruption on Hawaiis Big Island in 2018

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