Volcanoes

Magma's Viscosity (thickness) is directly related its what?

• age

• depth

• silica content

• how hot it is

What are the broad gently sloping volcanoes called?

• Shield

• composite

• strato

• cinder cone

What are the most violently erupting volcanoes called?

• shield

• stratovolcanoes (Composite)

• cinder cone

What is a caldera?

• the hole where the lava exits the volcano

• the top of the volcano

• a large bowl shaped depression in the volcano

• where witches brew potions

The ring of fire is an area of active volcanoes on the which ocean floor?

• Atlantic

• Pacific

• Indian

• Artic

All the gas, ash, and lava that is erupted from a volcano is called what?

• Hot Energy

• Volcano bombs

• liquid hot magma

• pyroclastic material

True or false? A volcano that flows very easily would be the most violent type of volcano?

• True

• False

What was the name of the volcano that erupted in Washington State in 1980?

• Mt. Fugi

• Mt. Reiner

• Mt. Hood

• Mt. St. Helens

Magma flows up the pipe and out of what part of a volcano?

• Crater

• Caldera

• Vent

• Magma Chamber

True or False? There are active volcanoes on Earth right now?

• True

• False