A parcel of air at the surface is heated, which expands the air and increases the parcel's volume. If the same number of air molecules occupy the greater volume, density decreases. The increase in volume results in lower pressure. What will happen to the air surrounding this parcel?
A) More dense air rises at the surface.
B) Less dense air sinks at the surface.
C) Less dense air flows in to replace the rising air.
D) Denser air flows in to replace the rising air.
D) Denser air flows in to replace the rising air.
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Which type of aquifer is most common in the United States?
A) sand and gravel B) igneous and metamorphic rock C) sandstone D) limestone
The normal lapse rate in the troposphere is about ________ per kilometer
3.5 degrees C 6.5 degrees C 1.5 degrees C 9.5 degrees C
In the Gulf Coast region of the United States cold fronts intense spring floods are often associated with a phenomenon known locally as "training" where thunderstorms form along a line and follow the same line for hours
This is a classic example of severe weather along a ________. A) stationary front B) hurricane C) cold front D) warm front
Which of the following are tectonic settings in which regional mountain belts form?
A. continental collisions B. mantle upwellings C. subduction zones D. All of these choices are correct.