What is an example of low-quality energy?
A. electricity
B. heat in the ocean
C. nuclear fission
D. gasoline
E. food
Answer: B
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Venus and Earth started out with roughly the same amount of water. While Earth still has water in abundance, all of Venus' was lost. Where did it go?
A. It chemically combined with CO2 to form CO4H. B. Scientists are still trying to determine this. C. Ultraviolet rays split the hydrogen from the oxygen components, and the hydrogen escaped into space. D. It all evaporated into space due to the intense daytime heat of 470°C.
This measures wind speed
A) anemometer. B) wind vane. C) psychrometer. D) hygrometer. E) barometer.
The angle of repose of sand is ____
a. ?lower for damp sand with small grain size b. ?always higher for large grain size c. ?always lower for large grain size d. ?always higher for damp sand e. ?always higher for dry sand
What kind of seawater is densest?
A) cold, low salinity B) warm, low salinity C) warm, high salinity D) cold, high salinity