Volcanoes

Front

A weak spot in the crust where molten material, or magma comes to the surface

Back

volcano

Front

Tall, cone-shaped mountains in which layers of lava alternate with layers of ash

Back

Composite volcano

Front

A molten mixture of rock-forming substances, gases, and water from the mantle

Back

Magma

Front

Molten material that reaches the surface.

Back

Lava

Front

A volcano belt that rims the Pacific Ocean

Back

Ring of Fire

Front

A live volcano

Back

Active volcano

Front

A sleeping volcano

Back

Dormant volcano

Front

Wide gentle sloping mountain from lava pouring out of the vent and hardens on top of previous layers

Back

Shield volcano

Front

A steep cone-shaped hill or mountain

Back

Cinder cone volcano

Front

A dead volcano, one that is unlikely to erupt again

Back

Extinct volcano