Doppler radar detects motion within a supercell thunderstorm using the Doppler effect, which states that
A) Immobile objects will result in an increase in wavelength.
B) objects moving away from the transmitter will result in an increase in wavelength.
C) objects moving toward the transmitter will result in an increase in wavelength.
D) objects moving away from the transmitter will result in an decrease in wavelength.
B) objects moving away from the transmitter will result in an increase in wavelength.
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Approximately 9 million childhood lead poisonings were prevented in the United States between 1976 and 2007 primarily because of
a. a ban on the use of lead-based paints and leaded gasoline b. a ban on the use of lead in car batteries c. a ban on the use of lead in pencils d. a ban on the use of transfused blood contaminated with lead e. all of these answers
Use the graphic map scale (in nautical miles [NM]) to estimate the distance from the center of the storm south of Chicago (at 40° N, 90° W) to the east coast of the United States (measure along the 40th parallel).
What will be an ideal response?
________ nautical miles
Locate the high pressure cell centered over Idaho near Pocatello (shown in Figure 19-3 at about 45° N, 110° W). Based on the upper elevation wind patterns, in which direction would you expect this pressure cell to travel over the next few hours? Look carefully at the parallels and meridians, and be as specific as possible.
Figure 19-4: 500-Millibar Height Contours map for November 9, 2011.
What will be an ideal response?
The Virgin Lands Campaign affected this republic the most
A. Moldova B. Latvia C. Kazakhstan D. Tajikistan