Igneous rocks high in feldspars and silicates are known as felsic rocks.

_______ igneous rocks are composed of dark-colored minerals rich in magnesium and iron.

Discuss how large eruptions like Mt. Pinatubo in 1991 and Tambora in 1815 affected Earth’s climate.

The process by which the ocean floor separates and moves in opposite directions is known as _______.

Which type of plate boundary results from two or more plates coming together?

Satellite images can be used to detect changes in a volcano’s surface temperature.

The reptilian fossils that Wegener used to help prove his ideas about continental drift are known as _______.

The separation of liquids from crystals during crystallization is known as _______.

The volcano in Hawaii that has been erupting constantly since 1983 is _______.

Beneath the surface, rocks completely melt at about 1000ºC.