Volcanoes

How many active volcanoes are there in the world today?

• 20

• 5

• 600

• 400

How many actual volcanic eruptions occur each year?

• 0

• 5

• 50

• 600

When a volcano is called 'dormant', this means that:

• it is erupting

• It will never erupt again

• It is active but is not erupting

A volcano erupts when the crust beneath it ruptures.

• True

• False

The lithosphere is made up of the earth's .... and the ....

The lithosphere is made up of slabs called t........ p.......

Most volcanos are found at the margins/edges of the tectonic plates.

• True

• False

At a divergent plate margin the two tectonic plates move closer together.

• True

• False

Where are most active volcanoes in the world found?

• Pacific ocean

• China

• Southern Ocean

• Indian Ocean

What is the name given to the area on Earth as the most dangerous place for volcanic activity?