Volcanoes

Front

What is pyroclastic material?

Back

Magma that blasts into the air and hardens.

Front

What is an active volcano?

Back

A volcano that will probably erupt soon.

Front

Where do most active volcanoes on land form?

Back

Where tectonic plates collide.

Front

What is a crater?

Back

A funnel-shaped pit.

Front

What happens if the water content of magma is high?

Back

An explosive eruption is likely.

Front

What is magma?

Back

Molten rock beneath the Earth's surface.

Front

What is lava?

Back

Magma that reaches the Earth's surface.

Front

What is a dormant volcano?

Back

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

Front

What is a shield volcano?

Back

A broad, gently sloping volcano formed by non-explosive eruptions.

Front

What is a composite volcano?

Back

A steep, conical volcano formed by explosive eruptions.