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Volcanic Eruptions and Activity Classification Quiz

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Volcanic Eruptions and Activity Classification Quiz

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Questions and Answers

What is the main effect of a thick layer of volcanic ash from a huge volcanic eruption?

It can collapse the roofs of buildings due to the weight of the ash. (correct)

It can increase the potential for geothermal energy in nearby areas.

It can decrease the Earth's average temperature for a few years.

It can cause an increase in carbon dioxide in the atmosphere.

What is the main advantage of using geothermal energy?

It can be used to produce electricity through geothermal power plants.

It is a sustainable energy source that can be replenished within a human lifetime. (correct)

It does not contribute to global warming or climate change.

It is not susceptible to natural calamities like earthquakes.

What is the relationship between elevation and climate?

The higher the elevation, the warmer the climate.

The higher the elevation, the colder the climate. (correct)

Elevation has no effect on the climate.

The higher the elevation, the drier the climate.

What is the main cause of global warming?

Burning of fossil fuels. Signup and view all the answers

Why is Polaris, the North Star, used for navigation?

Polaris is fixed in the northern sky and does not change position. Signup and view all the answers

What is the main effect of the tilt of the Earth's axis?

It causes the change of seasons. Signup and view all the answers

What determines the explosiveness of a volcano's eruption?

Silica content and magma viscosity Signup and view all the answers

How are volcanic belts typically formed?

Along the boundaries of Earth's plates Signup and view all the answers

What triggers the small earthquakes that occur around a volcano before an eruption?

Upward movement of magma Signup and view all the answers

What is a characteristic of Plinian eruptions like that of Mount Pinatubo?

Explosive volcanic eruptions Signup and view all the answers

What geological factor is used to classify volcanoes as active or inactive?

Records of volcanic eruption Signup and view all the answers

What is the molten material inside the Earth ejected during a volcanic eruption called?

Lava Signup and view all the answers