Blog

An igneous rock with a mixed texture of coarse crystals (phenocrysts) surrounded by fine crystals (groundmass) is termed ________.

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

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

According to the Big Bang theory, ________.

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

You have just bought your dream home along a coastline, but you notice that the beach in front of your new house is slowly disappearing. You decide to solve this by building a groin. Winds blow predominantly from east to west, so where do you place your groin?

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

At which of the following does a famous example of hot-spot volcanism occur?

Geologists call individual layers of sedimentary rocks ________, whereas several of them together are called ________.

Consult the figure below. Compared with amphibolite metamorphic facies, greenschist facies ________.