Hot spot Volcanoes Flashcards

1
Q

Most volcanic activity occurs at plate boundaries but there are some areas of intense volcanic activity that occur away from plate boundaries, these are called ___ _____

A

hot spots

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2
Q

Concentrations of ___________ elements in the mantle cause heat to rise (because it’s less dense) to the earths surface via __________

A

radioactive convection

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3
Q

The heat warms the earths _____ as well.

A

crust

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4
Q

The intense heat that rises from the mantle to the crust is called a magma _____.

A

plume

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5
Q

When magma reaches the top of the plume, it breaks through the crust to the earths surface and breaks through forming ________

A

volcanoes

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6
Q

The lava at hot spots is ________ and runny and low on the ___ scale.

A

basaltic VEI

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7
Q

The volcanic plume remains __________ but the crust above it moves.

A

Stationary

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8
Q

Volcanic activity in the part of the crust that was above the hot spot _________as it moves away.

A

Decreases

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9
Q

New volcanos form in the part of the crust that is now _____ the hot spot.

A

Above

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10
Q

As the crust continues to move a _____ of volcanos is formed.

A

Chain

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11
Q

There is a hot spot volcano in ______ USA.

A

Hawaii

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12
Q

When this process takes place underwater ______ ______ are formed

A

Island arches

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