Chapter 6 Volcanoes Flashcard

Front

What happens to the viscosity of lava as its temperature increases?

Back

The viscosity of lava decreases.

Front

What is the name of a lava flow that has a surface of rough, jagged blocks and sharp, angular projections?

Back

AA Flow.

Front

What type of lava flow resembles twisted braids in ropes as it cools and hardens?

Back

Pahoehoe.

Front

What is the largest intrusive igneous body called?

Back

Batholith.

Front

Which type of volcano is associated with the most violent and wide-scale volcanic eruptions?

Back

Composite Cone.

Front

What is the primary factor that affects the viscosity of lava?

Back

Temperature.

Front

What are the two main types of lava flows?

Back

AA Flow and Pahoehoe.

Front

What is the difference between AA Flow and Pahoehoe lava flows?

Back

AA Flow has a rough, jagged surface, while Pahoehoe has a smooth, ropy surface.

Front

What geological feature is formed by the accumulation of magma beneath the Earth's surface?

Back

Intrusive igneous body.

Front

What is the significance of a batholith in geology?

Back

It is the largest type of intrusive igneous rock formation.