Briefly explain how a pediment is formed. What will be an ideal response?
Pediments are erosional features developed on bedrock, formed in association with gradual erosion of
mountains by streams and sheet flooding and subsequent burial of their remnants in the eroded
sediment.
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All of the following sites was characterized by active volcanism in the Pleistocene except
a. the Cascade Range. d. the Sierra Nevada. b. Yellowstone National Park. e. the Appalachian Mountains. c. Lassen Peak
How is the distance to the epicenter of an earthquake determined using a seismograph?
a. How hard the seismograph needle swings back and forth is noted. b. Travel time is clocked and then compared to the reported time of the earthquake at the epicenter. c. The arrival times of surface waves are noted. d. The delay time between the P-wave and the slower S-wave is considered. e. You cannot do this with a single seismograph
Microbursts
A. are characterized by strong updrafts that can cause airplanes to crash. B. normally display a "starburst" (radial) damage pattern from rotating winds. C. are never accompanied by rain, and are only associated with dust storms. D. occur in the early stage of thunderstorms when latent heat release is maximized.
A mountain or hill that remains when adjacent areas have eroded to lower levels is a(n)
A. thrust fault. B. syncline. C. anticline. D. erosional remnant.