The specific humidity of air changes when there is a change in
A. the temperature of a parcel of air.
B. pressure of a parcel of air.
C. the addition or removal of water vapor.
D. All of these choices are correct.
Answer: C
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The stars Procyon and Betelgeuse both appear equally bright to Earthbound viewers. Yet Betelgeuse emits 5000 times more light than Procyon. Why do they appear to be equally bright?
A. because Betelgeuse is much farther than Procyon B. because Procyon is superhot C. because Betelgeuse lies in the same plane of Earth's orbit D. because Betelgeuse is undergoing fission, not fusion
What is defined here? "mixtures of ice and rock like dirty snowballs"
A) comets B) meteors C) asteroids D) meteorites
The spatial distribution of air quality nonattainment areas in the US is a result of
A) emissions. B) population. C) geographical features. D) emissions, population, geographical features and meteorological conditions.
Portuguese is spoken by nearly everyone in Portugal. The Portuguese ethnic group also comprises 99% of the population. This "marriage" of culture, ethnicity, and political sovereignty makes Portugal a good example of a:
A) multilingual society B) Indo-European country C) nation-state D) lingua franca