The tropopause
A) is named after the tropics, where it was first studied by scientists in the early twentieth century.
B) lies above the mesosphere.
C) is determined by changes in air pressure.
D) is the boundary between the Earth and outer space.
E) is at the top of a region where the temperature decreases with increasing elevation.
Question 2
When the barometer reads 500 mb
A) the air temperature is likely warmer than at the surface.
B) about one quarter of the atmosphere lies above the barometer.
C) it will likely break, since barometers are not built to withstand such high pressures.
D) about one quarter of the atmosphere lies below the barometer.
E) none of the above
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