Air masses have fairly uniform temperature and moisture content in horizontal direction (but not uniform in vertical). Air masses are characterized by their temperature and humidity properties.
Q. Which of the following will not cause air to become unstable?
Chapters 12 & 13 & 14
Table of Contents
| Question | Answer |
|---|---|
| Which of the following will NOT cause air to become more unstable? | subsidence of an air column |
| Which of the following would NOT be associated with stable atmospheric conditions? | afternoon thunder showers |
Q. Which is not a process that lifts air?
Cards
| Term Rain, snow, sleet, and hail are all examples of….. | Definition precipitation |
|---|---|
| Term Air that has reached its water-vapor capacity is said to be…. | Definition saturated |
| Term Which of the following is NOT a process that lifts air? | Definition Divergence |
| Term Orographic lifting is associated with… | Definition mountains |
Q. Which type of air mass can hold more water vapor?
Therefore, warm air, which is filled with highly-energized water molecules, often contains more water molecules than cooler air, which is filled with water molecules that more easily condense and become water.
Q. When air rises what happens to its temperature?
The air parcel expands as it rises and this expansion, or work, causes the temperature of the air parcel to decrease. As the parcel rises, its humidity increases until it reaches 100%. When this occurs, cloud droplets begin forming as the excess water vapor condenses on the largest aerosol particles.
Q. Why does air temperature decrease with altitude?
As you increase in elevation, there is less air above you thus the pressure decreases. As the pressure decreases, air molecules spread out further (i.e. air expands) and the temperature decreases. If the humidity is at 100 percent (because it’s snowing), the temperature decreases more slowly with height.
