The Doppler radar uses the principle called Doppler ____ to measure the speed at which falling rain is moving horizontally toward or away from the radar antenna.?
a. ?signal
b. ?radiance
c. ?acceleration
d. ?speedometer
e. ?shift
ANSWER: e
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CO2 promotes the ____________________ that warms the troposphere
Fill in the blanks with correct word
China has relatively large proven reserves of
A) coal. B) petroleum. C) natural gas. D) tar sandstone. E) All of the above
Industrial processes are more sustainable when they incorporate ________
A) nonrenewable resources B) linear pathways C) the recycling of energy D) human design E) circular pathways
Judge the following sentence according to the criteria given below: When studying alternating sandstone and shale beds prior to 1900,
sedimentologists interpreted that the sediment did not quietly settle out to the seafloor because they saw scoured bases on the graded beds and current-formed cross-beds. A) The assertion and the reason are both correct, and the reason is valid. B) The assertion and the reason are both correct, but the reason is invalid. C) The assertion is correct but the reason is incorrect. D) The assertion is incorrect but the reason is correct. E) Both the assertion and the reason are incorrect.