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________ are deposited by meltwater streams; they are composed of stratified sand and gravel.

Which one of the following concerning stalactites and stalagmites is NOT true?

________ refers to sediments deposited from streams.

What term denotes the percentage of open space or voids in a material?

The hot spring deposits at Mammoth Hot Springs, Yellowstone National Park, are travertine. What rock probably lies somewhere beneath the hot springs?

Compared to the age of the Earth accepted as correct today, how did seventeenth and eighteenth century proponents of catastrophism envision the Earth’s age?

The near-surface zone that contains some of the water that soaks into the ground is called the ________.

What force pushes groundwater from pore to pore below the water table?

________ rocks are composed almost entirely of light-colored silicates.

________ is a volcanic rock that is extremely vesicular and glassy.