Volcanoes

Front

What is molten rock that has formed deep within the Earth?

Back

Magma

Front

What is molten rock that has reached the Earth's surface?

Back

Lava

Front

What factor(s) determine(s) whether an eruption will be explosive? Options: The amount of gases in the magma, The amount of silica in the magma, The amount of gas and silica in the magma, None of these affect the explosiveness of the volcano

Back

The amount of gas and silica in the magma

Front

As magma rises towards the surface it collects in a 'room' called a _____ _____ .

Back

magma chamber

Front

Volcanoes are found...

Back

on land, under water, on islands

Front

The difference between magma and lava is _____

Back

where it is found (above or below the surface)

Front

Volcanoes that have recently erupted are known as: Extinct Volcano, Dormant Volcano, Active Volcano, What's a volcano?

Back

Active Volcano

Front

__________ volcanoes are usually steep sided. They are formed from layers of ash and lava.

Back

Cinder Cone

Front

__________ volcanoes are formed from fast flowing, lava which flows easily over the surface, forming larger volcanoes with gentle sides.

Back

Shield

Front

A subduction zone is...

Back

where the oceanic plate slides under the continental plate.