11. Generally, High pressure areas in the atmosphere tend to be clear and Low pressure areas have clouds.

Air moves into a Low pressure system. It pushes any air that was there upwards.

When high-level cirrus or low-level stratus clouds increase in a region, the region can expect to see precipitation from an incoming low-pressure system. Cirrus clouds are thin, wispy clouds that usually occur in the upper levels of the atmosphere ahead of a storm.

The Short Answer: Clouds are created when water vapor, an invisible gas, turns into liquid water droplets. These water droplets form on tiny particles, like dust, that are floating in the air. These energetic molecules then escape from the liquid water in the form of gas.

Clouds form when the invisible water vapor in the air condenses into visible water droplets or ice crystals. For this to happen, the parcel of air must be saturated, i.e. unable to hold all the water it contains in vapor form, so it starts to condense into a liquid or solid form.

When you release the pressure on the bottle you will notice a cloud forming inside the bottle. When you apply pressure the cloud disappears. When we increase the pressure of the gas, by compressing it, the temperature increases.

A low pressure system has lower pressure at its center than the areas around it. Winds blow towards the low pressure, and the air rises in the atmosphere where they meet. As the air rises, the water vapor within it condenses, forming clouds and often precipitation.

Areas of high and low pressure are caused by ascending and descending air. As air warms it ascends, leading to low pressure at the surface. As air cools it descends, leading to high pressure at the surface.

Low level clouds usually have the word “stratus” in their name. Vertical – Some clouds are vertical clouds. These clouds are very tall and may span many of the cloud levels. Vertical clouds usually have the word “cumulus” in their name.

Condensation is the process by which water vapor in the air is changed into liquid water. Condensation is crucial to the water cycle because it is responsible for the formation of clouds.

Heated by sunshine, the ground heats the air just above it. That warmed air starts to rise because, when warm, it is lighter and less dense than the air around it. As it rises, its pressure and temperature drop causing water vapor to condense. Eventually, enough moisture will condense out of the air to form a cloud.

The low-pressure weather system forms at areas of wind divergence in the upper layer of the troposphere. This divergence creates an empty space for the warmer air to rise in to, lowering the surface air pressures as that warm air moves upward. The warm air carries moisture up with it, creating clouds and ultimately, precipitation.

Heated by sunshine, the ground heats the air just above it. That warmed air starts to rise because, when warm, it is lighter and less dense than the air around it. As it rises, its pressure and temperature drop causing water vapor to condense. Eventually, enough moisture will condense out of the air to form a cloud.

Places where the air pressure is high, are called high pressure systems. A low pressure system has lower pressure at its center than the areas around it. Winds blow towards the low pressure, and the air rises in the atmosphere where they meet. As the air rises, the water vapor within it condenses, forming clouds and often precipitation.

When air rises in the atmosphere it gets cooler and is under less pressure. When air cools, it’s not able to hold all of the water vapor it once was. Air also can’t hold as much water when air pressure drops. The vapor becomes small water droplets or ice crystals and a cloud is formed.