Chapter 18 and 20

If the water vapor content of air remain constant, lowering air temperature cause what?
When the water-vapor content of air remains, lowering air temperature cause an increase in relative humidity, and raining air temperature cause a decrease in relative humidity.
What is true about warm, saturated air?
Warm saturated air contain more water vapor than cold air.
Compare to clouds, fogs are?
clouds result when air rises and cool. Fog is a cloud with its base at or near the ground.
Air that has reached its water vapor capacity is said to be?
Hurricanes form in tropical waters between the latitude of what?
5 and 20 degrees north and south latitude.
What type of front forms when the surface position of the front does not move?
stationary front
the process of converting a liquid to a gas in known as?
the boundary that separates different air masses is called what?
what is the first sign of an approaching warm front?
the first sign is the appearance of cirrus clouds
what kind of shape is associated with a middle-latitude cyclone?
wave shape
what is the dry adiabatic rate?
rate of cooling or heating in unsaturated air
a low cloud that blanket the sky and often generates precipitation is called an?
which term is used to describe clouds of middle height?
the process by which water vapor changes directly into a solid is called?
an immense body of air characterize by similar properties at any given altitude is known as?
air mass
which of the following refers to the temp to which air would have to be cooled to reach saturation?
dew point
water vapor make up what fraction of atmosphere gases?
0 to 4 percent
which gas is the most important for understanding atmosphere processes?
water vapor
the ratio of air’s water vapor content to it capacity to hold water vapor at the same temperature is the?
relative humidity
which of the following refers to the energy that is stored or released during a change of state of water?
latent heat