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Volcanoes and Eruptions

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Questions and Answers

What is the main cause of a volcanic eruption?

The release of dangerous gases
The buildup of magma in a chamber beneath the volcano (correct)
The cooling of lava on earth's surface
The interaction of water vapor with sulfur dioxide

What happens when magma heat and pressure reach the breaking point during a volcanic eruption?

The volcanic eruption stops abruptly
The magma presses up through the vents and is released (correct)
The lava solidifies into rocks instantly
The volcano cools down rapidly

Which of the following gases are commonly released during a volcanic eruption?

Water vapor and carbon dioxide (correct)
Hydrogen and methane
Oxygen and nitrogen
Chlorine and helium

What can happen if carbon dioxide and sulfur dioxide from volcanic gases are inhaled by animals and humans?

They may suffer serious health problems (C) Signup and view all the answers

What role do volcanic gases play in a volcanic eruption?

They are first brought to the surface as they are dissolved in magma (C) Signup and view all the answers

What is the main effect of water vapor emissions from volcanic eruptions?

Contributing to global warming (D) Signup and view all the answers

Which gas is heavier than air and accumulates in low-lying areas, causing pollution?

Carbon Dioxide (D) Signup and view all the answers

What is a unique effect of sulfur dioxide released from volcanic eruptions?

Contributing to acid rain (C) Signup and view all the answers

What can be fatal to humans if inhaled in highly concentrated amounts?

Carbon Dioxide (A) Signup and view all the answers

What is the main reason for turning off ventilation systems during a volcanic eruption?

To prevent the entry of harmful gases (B) Signup and view all the answers