8A Flashcards

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1
Q

Our English word volcano comes from _________ Island in the Mediterranean Sea

A

Volcano

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2
Q

Volcanos are made from __________ rocks

A

Igneous

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3
Q

Igneous in geology refers to anything having to do with __________ earth materials

A

Molten

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4
Q

What kind of igneous structure is a volcano?

A

Extrusive

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5
Q

Once magma erupts from the _________, it becomes ________.

A

Crater, lava

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6
Q

All types of magma contain _______.

A

Silica

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7
Q

Name 3 types of magma

A
  1. Basaltic-forms basalt rocks
  2. Andesitic- usually dark
  3. Rhyolitic- lighter in color
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8
Q

________ are vents in the ground where steam and other gases escape

A

Fumaroles

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9
Q

When volcanos emit solid material like ash or cinder, this material is called ________ material.

A

Pyroclastic

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10
Q

Why are there many volcanos near tectonic plates?

A

Because subduction creates lots of magma

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11
Q

What are the main volcano belts in the world?

A

1-Alpine Himalayan

2. Circum-Pacific

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12
Q

A _______ is a depositional mountain landform built from solidified magma from deep in the earth.

A

Volcano

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