Volcanoes

Match it! Select the correct answer from the pull down...Good luck!

Tall, cone-shaped mountains in which layers of lava alternate with layers of ash are called __________ volcanoes.

The huge hole left by the collapse of a volcanic mountain is called a ________________.

This is a large mass of rock formed when magma cools inside the crust.

When many layers of thin , runny lava build up a high, level area.

The main factor that accounts for the difference between quiet and explosive volcanic eruptions is

What provides the force that causes magma to erupt to the surface?

Before lava reaches the surface, the molten material is called

What is the average speed that the Pacific Plate was moving around 35 million years ago?