When you speak, exactly what moves across the room at 340 m/s?

A. The air.
B. Empty spaces in the air.
C. Wave motion through the air.
D. Molecules in the air.


Answer: C

Environmental & Atmospheric Sciences

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Why is the probability of dying from a meteorite impact greater than that of dying in an automobile accident?

A) because fatal meteorite impacts are likely to occur very frequently B) because there is a high probability that any person will be hit directly by a meteorite C) because a large meteorite impact would cause a very high number of fatalities D) because there are millions of meteoroids in near-Earth orbit

Environmental & Atmospheric Sciences

Which of the following are pioneer species?

A. Wood warblers B. Lichens C. Starlings D. Humans E. Dandelions

Environmental & Atmospheric Sciences

Europeans generate more CO2 emissions than do Americans

Indicate whether the statement is true or false

Environmental & Atmospheric Sciences

What determines the availability of energy in a tropical cyclone?

A) Evaporation rates B) The storm needs to stay over warm waters C) Condensation D) Latent heat of vaporization

Environmental & Atmospheric Sciences