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Any kind of material that is even colder than the cold air will heat up. Materials that will react with the air in exothermic reactions will also heat up. An example would be those little packages you can buy that have a bunch of finely ground iron powder that when you break the seal, the iron starts oxidizing - which is an exothermic reaction - and can do a nice job of warming up your hands or feet if you stick it in your gloves or boots for a while.
What else can I help you with?
Does hot air come from the bottom of the earth and the cold air come from the clouds?
No. Air at high altitudes may be cold, but if it is brought down to the surface the compression will heat it up. Warm air masses generally come from tropical and subtropical latitudes, where plentiful solar energy heats the Earth's surface, which in turn heats the air. Cold air masses come from the high latitudes, which radiate more heat into space than they receive from the sun.
How are convection currents involved in creating wind and thunderstorms?
Sunlight heats the ground, which then heats the air, which rises (hot air is less dense than cold air); as the air rises, cooler air falls and is sucked in to take the place of the air that rose. This creates various types of wind, depending upon the size of the air masses as well as the surrounding topography, which can deflect the air in different directions.
What kind of air would be characteristics of continental tropical air mass?
cold and dry :)
Does hot air have low pressure?
Hot air tends to have lower pressure than cold air. This is because as air heats up, its molecules move faster and spread out, decreasing the air density and resulting in lower pressure.
Which statement regarding air temperature is NOT trueCool air rises and warm air falls.Air heats up more quickly than land.Warm air is less dense than cool air.Air heats up more quickly than water?
"Cool air rises and warm air falls" is false. Cool air is denser than warm air, and therefore warm air will rise above cold air.
Where does the winds of come from?
It's the change in air temperature. Cold air heats up and becomes hot air and rises up since hot air is lighter than cold air. The other cold air stays nearer to the ground and that is what causes the winds to blow.
Does hot air come from the bottom of the earth and the cold air come from the clouds?
No. Air at high altitudes may be cold, but if it is brought down to the surface the compression will heat it up. Warm air masses generally come from tropical and subtropical latitudes, where plentiful solar energy heats the Earth's surface, which in turn heats the air. Cold air masses come from the high latitudes, which radiate more heat into space than they receive from the sun.
Does water evaporate faster when the air is cold?
yes because the hot air heats up the air and it evaporates.
How does a flame enable a hot air balloon to float?
Because it heats the air and of course the hot air will rise above the cold air causing it to float!
How the sun provides the energy for surface ocean currents?
The sun heats the water, causing cold / hot circulation, and evaporation. It also heats the air, causing wind, which also moves currents.
Which best explains why insulators keep heat in and cold out?
fire also warms the air around it by convection.this warmed air then moves through the room and heats it by conveection
How does a radiator heats a rooms air?
It heats from the celci-di that heats an outdoors calborithm
What kind of air moves downslope into a velley after sunset in mountains?
The cold air.
Why does got air rise and cold air sink?
Hot air rises because it is less dense than cold air. As hot air heats up, its molecules move more quickly and spread out, making it lighter and causing it to rise. Conversely, cold air is denser and sinks because its molecules move slower and are more closely packed together.
How are convection currents involved in creating wind and thunderstorms?
Sunlight heats the ground, which then heats the air, which rises (hot air is less dense than cold air); as the air rises, cooler air falls and is sucked in to take the place of the air that rose. This creates various types of wind, depending upon the size of the air masses as well as the surrounding topography, which can deflect the air in different directions.
What kind of air would be characteristics of continental tropical air mass?
cold and dry :)
What kind of air would be chacteristic of a continental polar air mass?
Cold and dry
