Question: What Kind Of Rainfall Occurs When Warm And Cold Air Meet?

What are the 3 types of rainfall?

There are 3 main types of rainfall: relief, frontal and convectional.

Describe each and give conditions when the occur.

(10 marks)Occurs mostly in tropics where it is hot.When air is hot is rises and cools and condenses forming rain.If the air is hot enough, it rises very quickly and can cause thunderstorms..

What is frontal rainfall?

Frontal rainfall occurs when a warm front meets a cold front. The heavier cold air sinks to the ground and the warm air rises above it. When the warm air rises, it cools. … The clouds bring heavy rain.

What are two things that can force air to rise quickly?

Surface heating and free convection. During the daytime, the earth’s surface is heated by the sun, which in turn heats the air in contact with the surface. … Surface Convergence and/or Upper-level Divergence. … Lifting Due To Topography. … Lifting Along Frontal Boundaries.

What four mechanisms can cause air to rise?

The four mechanisms are as follows: Orographic lifting: Air is forced to rise over a mountainous barrier. Frontal wedging: Warmer, less dense air is forced over cooler, denser air along a front. Convergence: Pileup of horizontal air flow resulting in an upward flow. Localized convective lifti.

What is orographic rain?

Orographic precipitation, rain, snow, or other precipitation produced when moist air is lifted as it moves over a mountain range. As the air rises and cools, orographic clouds form and serve as the source of the precipitation, most of which falls upwind of the mountain ridge.

What is it called when hot and cold air meet?

When two different air masses come into contact, they don’t mix. They push against each other along a line called a front. When a warm air mass meets a cold air mass, the warm air rises since it is lighter. At high altitude it cools, and the water vapor it contains condenses. This type of front is called a warm front.

What time of day does Convectional rainfall occur?

Convectional rainfall is widespread in areas where the ground is heated by the hot sun, such as the Tropics. This is why areas, such as the Amazon Rainforest, experience heavy rainfall most afternoons.

What kind of rain is there?

Condensation falls as rain and partially freezes, and the precipitation that reaches the ground is a mixture of snow and water. Hail: Sometimes rain encounters a layer of freezing air on its way to the ground and solidifies into raindrop-sized – or larger – ice pellets known as hailstones.

What is another name for rainfall?

What is another word for rainfall?delugerainstormdownpourstormraincloudburstdownfallwetdrizzleprecipitation75 more rows

What are the 4 types of rainfall?

The different types of precipitation are:Rain. Most commonly observed, drops larger than drizzle (0.02 inch / 0.5 mm or more) are considered rain. … Drizzle. Fairly uniform precipitation composed exclusively of fine drops very close together. … Ice Pellets (Sleet) … Hail. … Small Hail (Snow Pellets) … Snow. … Snow Grains. … Ice Crystals.

What happens when warm air rises and cold air sinks?

As hot air from the earth’s surface rises, it soon becomes cold air as it nears space, according to Historyforkids.org. As hot air cools it sinks back to the surface of the earth, where it gets warmed by the ocean only to rise again. This is called a convection current.

What happens when air gets hot and cold?

The movement of hot and cold air is very important for moving heat and energy around our planet Earth. Hot air is less ‘dense’ than cold air. In case you do not know the word ‘dense’ yet, I essentially mean that hot air is lighter and cold air is heavier. Therefore, hot air rises and cold air sinks.

What causes air parcels to rise?

A rising parcel of air expands because the air pressure falls with elevation. … A falling parcel of air contracts because the air pressure increases. • The contraction causes the air to warm.

Where is frontal rainfall found?

You’ve previously looked at this type of rainfall in some detail. Frontal rain is found where warm air meets cold at the cold and warm fronts in a depression (Figure 1).

What happens as warm air rises?

When warm moist air rises, what should we expect to happen? 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.

Is hot or cold air heavier?

Cold air is always heavier than an equal volume of hot air. “Air” is actually a mixture of several gases. … Because cold air is heavier than warm air, an advancing cold front cuts under the warmer air that it is displacing, forcing it aloft.

What causes an air parcel to rise vertically?

If the air temperature inside a parcel is warmer than the air temperature of the air surrounding the parcel, the number density inside the parcel is lower than the number density outside the parcel. Thus, the air parcel weighs less than an equal volume of air outside the parcel and it will rise upward (see Figure R).

What direction does rain fall?

A: Weather can move in any direction. In the United States, weather most often moves west to east, because that is the direction the jet stream blows.