Which of the following major discoveries was not made near or after World War II?
A) rift valleys in Africa
B) the extensive ranges of mountain chains on the sea floor
C) the absence of rocks older than 200 million years on the sea floor
D) deep focus earthquakes that occur in some regions of the earth
A
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In some situations, light behaves as if it were composed of particles rather than having a wavelike nature. What is the name given to light "particles?"
Which of the following situations would likely have low species diversity?
A. A region with mountains. B. A desert. C. An area with high species richness. D. A forest being managed for maximum lumber production.
Regarding electromagnetic energy, it is true that
A) wavelength is one half the height from peak to crest. B) solar radiation is "shortwave radiation." C) the Earth's radiation is of shorter length, on average, than the Sun's. D) longwave radiation is more energetic than shortwave radiation. E) the Earth absorbs most shortwave radiation at night.
This was not one of the Allies' requirements for the D-Day invasion
A) low tide B) close to new moon C) nearly clear skies D) near sunrise E) relatively light winds