In the United States, there was great concern in the early 1980s when earthquakes were frequent, including harmonic tremor, and four magnitude 6 earthquakes caused damage near ________.
A. Valles Caldera in New Mexico
B. Mt. St. Helens, Washington
C. Yellowstone National Park, Wyoming
D. Crater Lake, Oregon
E. Long Valley Caldera in California
Answer: E
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Which of the following is caused by the localized heating of the air from below?
A) thermal low B) cold core low C) dynamic low D) exchange low
A ball is thrown horizontally from the top of a tall cliff. Three seconds later, the ball has fallen a vertical distance of
A) 20 m. B) 30 m. C) 45 m. D) depends on the initial horizontal speed of the ball
Why does the text say there is a greater density and cultural diversity of Native Americans living in California, than in the rest of North America, prior to European contact?
A) A greater number of tribal conflicts caused groups to split and become isolated. B) The mild climate and rich diversity of resources. C) Past periods of disease forced isolation between many groups that led to cultural uniqueness. D) The flat terrain and lack of wetlands in the Central Valley drew many Native American immigrants from the surrounding Aztec, Mayan, Great Basin and Puget Sound tribes.
This is not one of the three processes for saturating air with water vapor:
A) increasing the carbon dioxide content of air. B) adding water vapor to the air. C) lowering the temperature to the dew point. D) mixing cold air with warm, moist air.