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What happens to warm air when it rises?

What happens to warm air when it rises?

The lighter warmer air mass begins to rise above the other cooler denser air mass. Warm fronts occur when light, warm air meets cold air. The warm air rises gradually over the cold air as they meet. As the warm air rises it cools and condenses to form clouds.

In which precipitation most warmer air rises up and cools and precipitates?

Convective Precipitation The most warmer air rises up and cools and precipitates. Convective precipitation is showery in nature. This type of precipitation happens in varying intensities. The areal extent of convective precipitation is small in the range of less than 10km in diameter.

What happens when warm and moist air rises in altitude and then cools?

If warm moist air rises, it will expand and cool. As it cools, the relative humidity will increase and water will condense. It can then fall back to the earth as precipitation. As air rises, it expands because there is less atmospheric pressure at higher altitudes.

What happens to warm moist air as it moves up a mountain Why think about change in density temperature and rainfall?

As warm, moist air rises up the side of the mountain – known as the windward side – it expands (because there’s less pressure) and it therefore cools. It’s also why the windward side is rainy and the leeward side is dry.

What happens when air subsides?

Subsidence, or sinking of air, may happen instead, forming an area of high pressure, an anticyclone. Large scale subsidence occurs when air several thousands of feet overhead is denser than the surrounding air. Warming of the air as it subsides increases evaporation, causing clear skies.

What happens when air cools?

What happens when air is heated or cooled? So air, like most other substances, expands when heated and contracts when cooled. Because there is more space between the molecules, the air is less dense than the surrounding matter and the hot air floats upward. This is the concept used in the hot air balloons.

What are 4 ways air can be forced upward?

– There are four lifting mechanisms that form clouds: Orographic Lifting, Convection, Convergence, and Updraft. – Orographic lifting is when air cannot go through a mountain, and so it flows over it. – Frontal Lifting is when less dense warm air is forced to rise over cooler, denser air as a weather fronts move.

How does relative humidity change with the temperature?

At constant vapor pressure, relative humidity varies inversely with the air temperature because the saturation vapor pressure increases with rising air temperature. As the air temperature rises from near sunrise to a maximum in the early to mid-afternoon, the saturation vapor pressure also increases.

What happens to the air above the frontal surface?

The warmer air rising above the frontal surface expands and cools as it ascends, and its relative humidity ________. If saturation is achieved, clouds develop and from those clouds, rain or snow may fall.

Why does the warm air move ahead of the cold air?

The warm air behind the front is slowly overtaking the cold air ahead of the front, which is moving more slowly in the same direction. The warmer air, due to lower density, climbs over the colder air as it moves.

How does the weather change after a warm front?

Temperatures are often warmer than they are before the warm front or after the cold front. Cloud types can be mixed, but usually consist of stratocumulus, which can range to being broken to covering the entire sky depending on distance from the centre of low pressure. Temperature rises and the dew point remains steady.