Volcanoes

Question 1

Earth’s surface is constantly changed by erosion and deposition. Erosion breaks down Earth’s surface by carrying materials away from an area. Deposition builds up Earth’s surface when these materials are deposited in an area over time.

Revolt · Accepted Answer

caldera

Question 2

Which word identifies one stage of volcanic activity?

Revolt · Accepted Answer

dormant

Question 3

The image shows Osorno in Chile, which last erupted in 1869.

Revolt · Accepted Answer

dormant volcano

Question 4

A volcano that has not erupted in a very long time suddenly has a plume of steam coming from it. Which best describes this volcano?

Revolt · Accepted Answer

was dormant and is now active

Question 5

The image shows a volcano erupting at night in Russia.

Revolt · Accepted Answer

Volcano quietly erupts due to low-viscosity magma!

Question 6

The photo shows Old Faithful in Yellowstone National Park.

Revolt · Accepted Answer

It is a geyser that formed due to water heated by magma erupting at Earth’s surface.

Question 7

Which phrase describes a lava plateau?

Revolt · Accepted Answer

volcanic material in valleys

Question 8

Which statement explains what happens as magma rises inside a volcano?

Revolt · Accepted Answer

The magmatic pressure decreases.

Question 9

Which event causes a volcanic eruption?

Revolt · Accepted Answer

explosions occurring in magma chambers

Question 10

Mount St. Helens is a volcano that erupted with great force in 1980. Which phrase best describes this eruption?

Revolt · Accepted Answer

high-viscosity magma

Volcanoes Answers

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