Volcanoes

Front

This is the name for the chain of volcanoes and earthquakes around the edge of the Pacific Plate.

Back

The Ring of Fire

Front

What kind of plate boundary is shown here? divergent, convergent, transform

Back

convergent

Front

What kind of plate boundary is shown here? Options: divergent, convergent, transform

Back

divergent

Front

Hot melted rock that forms underground near the subduction zone is called ___.

Back

magma

Front

What is magma called when it reaches the surface of Earth?

Back

Lava

Front

How much ___ that is in a volcano's magma helps to decide whether it will be explosive or quiet. Options: silica, rock, air holes, soil

Back

silica

Front

True or False: The more silica a volcano has in its magma, the quieter it will erupt.

Back

false

Front

What is a volcano?

Back

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

Front

Where do volcanoes typically form?

Back

At plate boundaries.

Front

What is an explosive eruption?

Back

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