Plate Tectonics CFA Study Guide

Lava begins as

• water
• crust
• magma
• pumice

Over time, as a volcano continues to erupt, it will get

• smaller
• bigger
• hungry
• cold

This volcano is most likely which type of volcano?

• Felsic
• Composite
• Shield
• Cinder cone

What is a determining factor in which type of eruption will occur?

• amount of gas in the magma
• the size of the mountain
• the climate around the volcano
• the number of people living near the volcano

Composite/Stratovolcanoes can be described as...

• Very large with gentle slopes and eruptions of low viscosity magma
• Large with steep slopes and violent eruptions of very viscous magma
• Small and clustered in groups with steep slopes and firey eruptions that occur only once

Cinder cones can be described as...

• Very large with gentle slopes and eruptions of low viscosity magma
• Large with steep slopes and violent eruptions of very viscous magma
• Small and clustered in groups with steep slopes and firey eruptions that occur only once

Which of these is NOT a type of volcano?

• Shield
• Super
• Composite
• Cinder

What is the largest volcano with gently sloping sides?

• shield volcano
• cinder cone volcaano
• composite volcano

What are the most explosive types of volcanoes?

• Shield
• Composite
• Cinder Cone

Volcanoes with quiet eruptions are produced by

•  magma with runny lava and low less gas
•  magma with a sticky lava with and more gas