Scientists search for fossil fuels in many ways. Sending a sound wave into the ground (by exploding dynamite, thumping the ground with a large weight, or using an electric vibrating machine) and measuring its return to the surface at receiving
stations is called ________ surveying.
A) sonar B) geologic C) destructive D) seismic E) dynamite
D
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A heat transfer process in the atmosphere that depends upon the movement of air is:
a. conduction. b. absorption. c. reflection. d. convection. e. radiation.
The vast __________ make Southern Africa one of the wealthiest regions of Africa with the greatest potential for economic growth.
a. tourism operations b. mineral resources c. manufacturing capabilities d. forests e. transportation networks
It is now known that, overall, clouds:a
have a net warming effect on climate b. have a net cooling effect on climate c. have no net effect on climate d. are the single most important feature in determining climate
For many tropical wet and dry (Aw) stations in the Northern Hemisphere, April and May are often warmer than June and July
Indicate whether the statement is true or false