Which of the following is true of the big bang?
A) It was a giant explosion.
B) It resulted in galaxies flying away from a center.
C) It was a localized event.
D) It filled the entire volume of the Universe.
D
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Disregarding the effects of friction, a cyclist will coast farther when a lamp powered by a wheel generator is
A) of low wattage. B) of high wattage. C) turned off. D) none of the above
Which of the following describes volcanism?
A) the excavation of bowl-shaped depressions by asteroids or comets striking a planet's surface B) the eruption of molten rock from a planet's interior to its surface C) the disruption of a planet's surface by internal stresses D) the wearing down or building up of geological features by wind, water, ice, and other phenomena of planetary weather
As more lamps are put into a parallel circuit, the overall current in the power source
A) increases. B) decreases. C) remains the same.
Which terrestrial world has the greatest difference in temperature between its "no greenhouse" temperature and its actual temperature?
A) Mercury B) Venus C) Earth D) the Moon E) Mars