Along a large cone-shaped volcano, a ________ drainage network is expected.

If a geologist found preserved mud cracks, he or she could conclude that the environment in which they formed ________.

Ash and lava fragments that cascade down the sides of a volcano eventually settle and lithify to form an extrusive igneous rock called ________.

Compared with the continental crust, the oceanic crust is ________.

At transform plate boundaries, ________.

Summed over the entire surface of Earth, the rate of spreading at divergent boundaries is ________ lithospheric consumption at subduction zones.

Marine magnetic anomaly belts run parallel to ________.

The density of rocks is generally related to composition. Which of the following choices places rock compositions in order of increasing density?

The branch of science that studies the structure and history of the Universe is ________.

Earth’s geothermal gradient is the rate of temperature change incurred by ________.