Sometimes the same word can have different meanings. In the United States the word billion means "a thousand million" but in Britain the word billion means "a million million." Which of the following corresponds to the "British Billion"?
A) 1 x 10^-9
B) 1 x 10^-6
C) 1 x 10^9
D) 1 x 10^12
D
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The effect of transportation on a pebble's particle size is best summarized by which statement?
A. Its size increases. B. Its size decreases. C. Its size stays the same.
The unit that measures the amount of energy required to raise the temperature of 1 g of water 1°C is the ________
A) joule B) volt C) watt-hour D) kilowatt-hour E) calorie
A rawinsonde does not measure
A) air composition. B) wind direction. C) air temperature. D) humidity. E) air pressure.
Why is the Moon still visible during a full lunar eclipse?
A. Background microwave radiation becomes excited during the lunar eclipse and shifts toward visual light, which then slightly illuminates the eclipsed moon. B. There is a minor component of phosphorescent minerals distributed fairly evenly on the lunar surface. C. The Moon's thin atmosphere acts as a mirror, reflecting light being cast from neighboring stars. D. Earth's atmosphere acts as a lens that refracts light into the shadowed region.