Chapter 18: Volcanic Activity

Which type of volcano is shown? 

Volcanoes associated with (divergent, convergent) plate boundaries form the Ring of Fire.

Cinder-cone volcanoes have steep sides and are generally the (largest, smallest) volcanoes.

When a volcano collapses due to the magma chamber becoming empty, it creates a??

(Laccoliths, Dikes) are plutons that cause overlying rocks to bow upward. (shape #1 in the pic)

Temperature and pressure (increase, decrease) with depth beneath Earth’s surface.

The temperature and silica content can affect the ________ of magma.

The temperature at which a substance melts (increases, decreases) with the presence of water.

This igneous structure #8 forms parallel to rock layers in Earth's crust.

This igneous structure # 6 is dome or lens shaped & eventually become exposed to the surface.

Rhyolitic magma forms beneath (continental, oceanic) crust.

The hotter the magma or lava, the (greater, lower) is its viscosity.

What type of volcano is shown? 

This feature # 4 forms when magma pours through a type of crack on in Earth's surface.

This igneous structure #9, the largest of all the plutons, and common in mountain ranges.

An intrusive igneous rock body (all the #'s are a form of it)

Pieces of rock that is released during a volcanic explosion is know as......

Lava that has low viscosity moves (slower, faster) than lava with high viscosity.

The Hawaiian Islands and Yellowstone National Park have what in common?

Which area is surrounded by the Ring of Fire?