Earth is closest to the Sun (called perihelion) during ____________.

Which of the following statements correctly reflects the relationship between the air temperature (T), the dew-point temperature (Td), and the wet-bulb temperature (Tw)?

Which of the following factors exerts the weakest control on regional climate?

Which heat transfer process can take place in a vacuum?

Which of the following cloud types does not have a relatively high base?

Satellites are used primarily to measure which of the following atmospheric properties or quantities?

Frost forms on an exposed surface when the dew-point temperature of that surface falls below the ___________.

On a day of the winter solstice in the Northern Hemisphere, the number of hours of daylight is __________ the number of hours of darkness.

In the troposphere, air temperature _______________ with increasing altitude.

As temperature increases, saturation vapor pressure _________ and as temperature decreases, saturation vapor pressure ___________.