Volcanoes

A  line of volcanic activity that surrounds the Pacific Ocean basin is the 

• Ring of Fire
• Aleutian Islands
• Hawaiian Islands
• Caribbean Islands

Which of these volcanic particulates is the largest in size?

• Block
• Ash
• Bomb
• Lapilli

This volcano is most likely which type of volcano?

• Felsic
• Composite
• Shield
• Cinder cone

Which of the following factors helps determine whether a volcanic eruption will be violent or relatively quiet?

• amt of dissolved gases
• temp of magma
• composition of magma
• all of the above

What type of volcano is built almost entirely from ejected lava fragments?

• cinder cone
• composite cone
• shield volcano
• pahoehoe volcano

Once magma reaches the earth's surface it is called.....

• Silica
• Rock
• lava

Magma leaves a volcano through a 

• dike
• sill
• vent

An explosive eruption occurs if magma is 

• low in viscosity
• high in silica
• very thin

When a volcano erupts quietly, what kind of mountain forms?

• A Shield Volcano
• Cinder Cone Volcano
• Composite Volcano

Volcanoes are common along

• convergent plate boundaries.
• divergent plate boundaries.
• transform plate boundaries.
• two of the above