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Volcanoes and Eruptions Overview

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Questions and Answers

What is the most abundant gas during a volcanic eruption?

Hydrogen sulfide

Water vapor (correct)

Carbon dioxide

Sulfur dioxide

Why does water vapor from volcanic eruptions contribute to global warming?

It cools down the Earth's surface

It traps heat in the atmosphere (correct)

It reflects heat back into space

It absorbs excessive carbon dioxide

Which characteristic of carbon dioxide makes it harmful during volcanic eruptions?

Can be detected by smell

Is combustible in nature

Reflects sunlight

Is heavier than air (correct)

How do sulfuric acid aerosols formed by sulfur dioxide affect climate change?

Reflect sunlight back into space Signup and view all the answers

What is a proven harmful effect of hydrogen sulfide and hydrochloric acid released during volcanic eruptions?

Damages the respiratory system and irritates the eyes Signup and view all the answers

What is the main cause of a volcanic eruption?

Buildup of magma in a chamber Signup and view all the answers

Which gases are commonly released during a volcanic eruption?

Water vapor and sulfur dioxide Signup and view all the answers

What happens when magma heat and pressure reach the breaking point?

Magma is released into the atmosphere Signup and view all the answers

How can inhaling carbon dioxide and sulfur dioxide from volcanic eruptions affect animals and humans?

Cause serious health problems Signup and view all the answers

Why are volcanic gases first brought to the surface as they are dissolved in magma?

To carry the gases to the surface Signup and view all the answers