Item WC091002: Clouds are likely to form as air moves up over a mountain because air cools as it rises and clouds are likely to form as air cools . In the diagram below, warm air is moving over a lake and upward along the side of a mountain. ... Clouds do not form in air that does not already have clouds.
Why do clouds form over warm water?
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.
Where are clouds most likely to form?
Clouds generally form within the troposphere , or the layer of atmosphere closest to the earth. As they rise and fall, they may appear in infinite variations.
What causes clouds to form?
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.
Under which atmospheric conditions do clouds most likely form?
Clouds form when air becomes saturated, or filled, with water vapor . Warm air can hold more water vapor than cold air, so lowering the temperature of an air mass is like squeezing a sponge. Clouds are the visible result of that squeeze of cooler, moist air. Moist air becomes cloudy with only slight cooling.
Do clouds hold in heat?
Clouds can block light and heat from the Sun, making Earth’s temperature cooler. ... Clouds can trap that heat from the Sun . At night, when there’s no sunlight, clouds are still trapping heat. It’s sort of like clouds are wrapping Earth in a big, warm blanket.
Is fog a cloud?
Fog is a cloud that touches the ground . ... Fog shows up when water vapor, or water in its gaseous form, condenses. During condensation, molecules of water vapor combine to make tiny liquid water droplets that hang in the air. You can see fog because of these tiny water droplets.
What is the highest cloud ever recorded?
Formation. Noctilucent clouds are composed of tiny crystals of water ice up to 100 nm in diameter and exist at a height of about 76 to 85 km (249,000 to 279,000 ft), higher than any other clouds in Earth’s atmosphere.
Are clouds more likely to form over the lake or over the mountain?
Item WC091002: Clouds are likely to form as air moves up over a mountain because air cools as it rises and clouds are likely to form as air cools. In the diagram below, warm air is moving over a lake and upward along the side of a mountain.
What are 3 major types of clouds?
While clouds appear in infinite shapes and sizes they fall into some basic forms. From his Essay of the Modifications of Clouds (1803) Luke Howard divided clouds into three categories; cirrus, cumulus and stratus . The Latin word ‘cirro’ means curl of hair.
Why do clouds turn GREY?
When clouds are thin, they let a large portion of the light through and appear white. But like any objects that transmit light, the thicker they are, the less light makes it through. As their thickness increases , the bottoms of clouds look darker but still scatter all colors. We perceive this as gray.
Can I touch clouds?
Unfortunately, it does not feel like cotton balls or cotton candy, but most people have technically touched a cloud before . If you wanted to touch an airborne cloud, the best way to do this is either skydiving or in a hot air balloon, though I would not want to be stuck in a cloud while in a hot air balloon.
Can clouds combine?
In warm clouds, larger cloud droplets fall at a higher terminal velocity; because at a given velocity, the drag force per unit of droplet weight on smaller droplets is larger than on large droplets. The large droplets can then collide with small droplets and combine to form even larger drops.
How clouds are formed and bring us rain?
Clouds are formed when water vapor rises high up into the air . When it reaches cold air, the vapor turns back into droplets of water! When clouds get so full of water droplets that they can’t hold any more, the water falls back to the ground as rain!
How are clouds formed Class 6?
How are clouds formed? The process of evaporation followed by condensation causes the formation of clouds. ... On reaching a certain height, water vapour present in air condenses to form tiny droplets of water. These water droplets collect to form clouds that float in air.
Where the most weather changes occur?
Weather is different in different parts of the world and changes over minutes, hours, days and weeks. Most weather happens in the troposphere , the part of Earth’s atmosphere that is closest to the ground.
