If a rock started with 1,000 atoms of a parent but now contains 250 atoms, how many half-lives have passed?
A) 0.25 half-lives
B) 0.5 half-lives
C) 2 half-lives
D) 4 half-lives
E) There is no way to tell.
C) 2 half-lives
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At which of the following times is the lowest temperature usually observed?
A. several hours before sunrise B. near sunset C. several hours before sunset D. near sunrise
The dominance of English as an international language has facilitated
A) the decline of other national languages. B) the increase in American students learning another language. C) diffusion of popular culture, science, and international trade. D) the rise in the use of Chinese logograms. E) the stagnation of the English language in terms of new words added.
Wind travels from areas of low pressure to areas of high pressure
Indicate whether the statement is true or false
After the parcel of air has descended down the lee side of the mountain to sea level, what is the temperature of the parcel?
Assume that a parcel of air is forced to rise up and over a 6000-foot-high mountain (as shown). The initial temperature of the parcel at sea level is 76.5°F, and the lifting condensation level (LCL) of the parcel is 3000 feet. The DAR is 5.5°F>1000 feet and the SAR is 3.3°F>1000 feet. Assume that condensation begins at 100% relative humidity and that no evaporation takes place as the parcel descends. Indicate calculated temperatures to 1 decimal place.
What will be an ideal response?
___ °F