Review Questions 19A (Earth Science)

What is the average sea level pressure measured in millibars? In pounds per square inch?

1013 mbar; 14.7 psi.

Compare absolute humidity to relative humidity.

Absolute is total grams per cubic meter, relative humidity is the ratio of the water vapor in the air compared to with the amount needed to saturate the air.

The weight and density of atmospheric gases have the greatest effect on which of the measurable weather conditions?

Atmospheric pressure.

What two things happen to air in the atmosphere when it cools?

It contracts and becomes denser.

What is the study of the atmosphere called?

Meteorology.

Suggest some of the challenges that lie ahead for using wing power on a large scale.

Minimizing visual clutter, Noise, wildlife.

What is the most common form of precipitation? List three other forms.

Rain. Hail, sleet, snow.

Dry air can be the same temperature as more humid air, but it feels cooler. Why?

Temperature being the same, we feel cooler if the air is dry than we do if the air is humid because moisture on our skin should evaporates more readily.

List five conditions that are used to describe weather.

Temperature, atmospheric pressure, wind speed and direction, precipitation, and humidity.