Mystery Science Birth of Rocks 2

Front

What is basalt?

Back

Basalt is a dark-colored rock that can be found in shield volcanoes.

Front

What is felsite?

Back

Felsite is a light-colored rock.

Front

Why are volcanoes with thick lava more likely to explode?

Back

Because air bubbles can't escape and the pressure builds until it blows up.

Front

What type of lava is found in a shield volcano?

Back

Thin, runny lava.

Front

Why are volcanoes with thin lava less likely to explode?

Back

Because air bubbles can escape the lava and there is no build-up of pressure.

Front

What is a shield volcano?

Back

A type of volcano that has broad, gently sloping sides and erupts thin, runny lava.

Front

What is the Ring of Fire?

Back

A region in the Pacific Ocean where many earthquakes and volcanic eruptions occur.

Front

What causes a volcanic eruption?

Back

An eruption occurs when pressure from gases and magma builds up inside a volcano.

Front

What is magma?

Back

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

Front

What is lava?

Back

Lava is magma that has reached the Earth's surface.