Predicting Eruptions

Front

What does inflation in a volcano indicate?

Back

Inflation can show that magma is close to the surface.

Front

Rank the volcanic stages from least likely to most likely to erupt.

Back

Extinct, dormant, active.

Front

What is a steam eruption?

Back

When magma rises toward the surface, causing the groundwater to boil and releasing steam.

Front

How do gas emissions warn us of an upcoming eruption?

Back

The presence of increased CO2 or SO2 can show that magma is close to the surface.

Front

What is a possible cause of tectonic plate motion?

Back

Convection currents.

Front

What is a dormant volcano?

Back

A volcano that has not erupted in a long time but may erupt again.

Front

What is an active volcano?

Back

A volcano that is currently erupting or has erupted recently.

Front

What is an extinct volcano?

Back

A volcano that is not expected to erupt again.

Front

What role do tectonic plates play in volcanic eruptions?

Back

Tectonic plates can move and create pressure that leads to eruptions.

Front

What is magma?

Back

Magma is molten rock located beneath the Earth's surface.