What is it called when air cools?

What is it called when air cools?

Condensation, as we have seen in Section 4, involves the cooling of air which causes water vapour to turn into water droplets (such as dew, frost and fog). As air is uplifted, it also cools.

What happens when air expands and cools?

As it rises, it expands and cools. Water vapor condenses out of the cool air to form a cloud. As the air parcel rises higher and higher, it continues to expand and get cooler, and more moisture condenses out of it. Eventually, enough moisture will condense out of the air parcel to form a cloud!

Does condensation happen when air cools?

If the air cools enough (temperature decreases enough) that the evaporation rate becomes less than the condensation rate, net condensation can occur and liquid water drops can form and grow. For example, in theory, clouds form when the air cools and the temperature drops to, and ever so slightly below, the dew point.

What processes occur on a warm front?

A warm front is a boundary of air that brings warmer temperatures and a change in wind direction and air pressure. Clouds and precipitation develop ahead of a warm front, while clear skies and warmer temperatures can be felt after the warm front moves through.

What happens in a warm front?

A warm front forms when a warm air mass pushes into a cooler air mass, shown in the image to the right (A). Warm fronts often bring stormy weather as the warm air mass at the surface rises above the cool air mass, making clouds and storms. As the front passes over an area, the clouds become lower, and rain is likely.

What is the runoff process?

Runoff occurs when there is more water than land can absorb. The excess liquid flows across the surface of the land and into nearby creeks, streams, or ponds. Runoff can come from both natural processes and human activity. Runoff also occurs naturally as soil is eroded and carried to various bodies of water.

What are the 3 primary processes in the atmosphere that always directly involve latent cooling?

In total, energy leaves Earth’s surface through three processes: evaporation and condensation (or latent heating and cooling), convection, and emission of thermal infrared radiation. Of these three processes, 25 percent of the energy that leaves the surface of the Earth is through evaporation and condensation.

When warm air rises and cools what happens quizlet?

The moving warm air rises over the cooler dense air as the two air masses collide. The rising warm air-cools adiabatically and the cooling generates cloud and precipitation.

Why condensation occurs when air is cooled?

When air is cooled, relative humidity increases, until at a particular temperature, called the dew point, the air becomes saturated. Further cooling below the dew point will induce condensation of the excess water vapour. When temperatures are near or a little below 0°C, supercooled water droplets can form.

What happens when warm air cools and the temperature drops to the dew point?

Which statement describes what will most likely occur when warm air cools and the temperature drops to the dew point? Dew will form on leaves. water vapor in the air condenses to form liquid water or ice.

How is adiabatic cooling related to the heating of the atmosphere?

As a process leading to adiabatic cooling it is common whenever the earth’s surface is warmer than the air above. Thus, the temperature changes brought about in the air aloft simply due to changes in the air pressure are very important in the heating or cooling of the atmosphere.

What happens to the condensation rate as air cools?

As air is cooled, the evaporation rate decreases more rapidly than does the condensation rate with the result that there comes a temperature (the dew point temperature) where the evaporation is less than the condensation and a droplet can grow into a cloud drop.

Which is a process that gives rise to ascending air?

There are four main processes occurring at or near the earth’s surface which give can rise to ascending air: convergence, convection, frontal lifting and physical lifting. Convergence occurs when several surface air currents in the horizontal flow move toward each other to meet in a common space.

Why does cooling and warming of air masses occur?

In both cases, cooling and warming of air masses occurs because they are forced upward or downward in the atmosphere.