Volcanoes

Front

What is a volcano?

Back

A weak spot in Earth’s crust where magma can come to the surface.

Front

What is lava?

Back

Hot semifluid rock that becomes solid rock as it cools off.

Front

What kind of lava is slower-moving?

Back

Aa.

Front

What is an explosive eruption?

Back

When trapped gases build up pressure until they explode with incredible force.

Front

What kind of eruptions do shield volcanoes have?

Back

Quiet eruptions.

Front

What is magma?

Back

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

Front

What is the difference between magma and lava?

Back

Magma is underground; lava is magma that has reached the surface.

Front

What are the main parts of a volcano?

Back

Magma chamber, vent, crater, and lava flow.

Front

What is a crater?

Back

A bowl-shaped depression at the top of a volcano.

Front

What is a vent?

Back

An opening in the Earth's crust through which lava and gases escape.