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Vapor rises from a cold cup on a hot day because the cold surface of the cup cools the air immediately above it, causing the water vapor in the air to condense into tiny droplets. These droplets form a mist or fog that appears to rise from the cup as warm air from the surroundings moves in to replace the cooled air.

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Why does fog form when you exhale on a very cold day?

When you exhale on a very cold day, your warm breath contains water vapor. When the warm, moist air meets the cold air, it cools rapidly and the water vapor condenses into tiny droplets, forming fog. This happens because cold air cannot hold as much moisture as warm air.


Why is my breath cold when I exhale on a cold day?

When you exhale on a cold day, your breath appears cold because the warm air from your lungs meets the cold air outside, causing the water vapor in your breath to condense into tiny droplets, creating a visible mist.


When it's humid the air holds a lot of water vapor but when it's cold what happens to the water vapor?

nothing "happens" 2 the water vapor. the vast amount of water vapor in the air on a humid day as exactly bcoz its so hot. the water is drawn out of sources which holds it. but when its cold that water isn't drawn out


Why does a glass of hot water thrown into air on a cold day turn into a cloud?

When hot water is thrown into the air on a cold day, the water quickly evaporates due to the temperature difference. The water vapor condenses into tiny water droplets or ice crystals, forming a cloud. This happens because the cold air saturates quickly with the water vapor, creating a visible cloud.


Is breath visible on a cold day a change in state?

Yes, the visibility of breath on a cold day is a change in state. When you exhale warm air, it quickly cools down upon contact with the cold air outside, causing the water vapor in your breath to condense into tiny droplets that become visible as mist or fog. This change from invisible water vapor to visible droplets is a physical change in state called condensation.

Related Questions

Why do you see your breathe in a cold day?

Because you have water vapor on your mouth when you breath it out the water vapor turns to water like how rain comes


Why you see your breath on a cold day?

What you see is water vapor. The air that you exhale contains water vapor. When you exhale during a cold day, the relative humidity increases. Relative humidity is actually the percentage of the amount of water vapr in the air. (the maximum amount of water vapor that the air can hold at that temperature) The colder the air, the less water vapor it can carry. When exhaled, air mixes with cold air, the temperature of the exhaled air drops, but there is more water vapor. When the air becomes saturated, (relative humidity is 100%), the extra water vapor will condense, allowing you to see your breathe on cold days.


What would happen to a puddle on a cold day?

It would rise to the sky slower than a sunny day


Why does fog form when you exhale on a very cold day?

When you exhale on a very cold day, your warm breath contains water vapor. When the warm, moist air meets the cold air, it cools rapidly and the water vapor condenses into tiny droplets, forming fog. This happens because cold air cannot hold as much moisture as warm air.


Why is my breath cold when I exhale on a cold day?

When you exhale on a cold day, your breath appears cold because the warm air from your lungs meets the cold air outside, causing the water vapor in your breath to condense into tiny droplets, creating a visible mist.


What would happen on a humid day if you took an empty metal cup out of a freezer and put it on a napkin?

The napkin will get wet and will form water vapor.


Why does a womens vagina let out smoke after sex?

It shouldn't. If its really cold in the room or where ever, you might be seeing a vapor like when you see your breath outside on a cold day.


When it's humid the air holds a lot of water vapor but when it's cold what happens to the water vapor?

nothing "happens" 2 the water vapor. the vast amount of water vapor in the air on a humid day as exactly bcoz its so hot. the water is drawn out of sources which holds it. but when its cold that water isn't drawn out


What product respriation that can be seen in a person's breath on really cold day?

That is the water vapor from our breath, that condenses to water droplets. Water vapor by itself is invisible - it becomes visible when it forms droplets.


Why do you see your breath on a cold day?

What you see is water vapor. The air that you exhale contains water vapor. When you exhale during a cold day, the relative humidity increases. Relative humidity is actually the percentage of the amount of water vapr in the air. (the maximum amount of water vapor that the air can hold at that temperature) The colder the air, the less water vapor it can carry. When exhaled, air mixes with cold air, the temperature of the exhaled air drops, but there is more water vapor. When the air becomes saturated, (relative humidity is 100%), the extra water vapor will condense, allowing you to see your breathe on cold days.


What causes the fog that comes out of your mouth on a cold day?

the moisture from your mouth is heat so it makes it into hot air an fit comes out as vapor


Why does a glass of hot water thrown into air on a cold day turn into a cloud?

When hot water is thrown into the air on a cold day, the water quickly evaporates due to the temperature difference. The water vapor condenses into tiny water droplets or ice crystals, forming a cloud. This happens because the cold air saturates quickly with the water vapor, creating a visible cloud.