What causes the air over land to be warmer than the air over water?
Well, nothing exists between the air and the water surface. The final process, radiation, is causing the winter-time air temperatures over water to be warmer than the winter-time air temperatures over land. The heat of the ocean is being given off (radiated) into the air, thus making the air substantially warmer.
Why Does hot air rise upwards?
As the molecules heat and move faster, they are moving apart. So air, like most other substances, expands when heated and contracts when cooled. Because there is more space between the molecules, the air is less dense than the surrounding matter and the hot air floats upward.
When warm air rises at the equator what happens to the water that rises with it how does this affect climate at the equator?
But as air reaches the upper levels of the atmosphere, it cools. Water molecules condense to form clouds and eventually fall as rain. Warm air rising from Earth’s surface pushes the air mass away from the equator, and releases its moisture as precipitation as it travels pole-ward (Figure 1).
What happens when heated air rises over the earth?
Convection in the atmosphere creates the planet’s weather. When warm air rises and cools in a low pressure zone, it may not be able to hold all the water it contains as vapor. Some water vapor may condense to form clouds or precipitation. When cool air descends, it warms.
What happens when air rises in the troposphere?
The cycle, which occurs in the troposphere, begins as the sun evaporates large amounts of water from the earth’s surface and the moisture is transported to other regions by the wind. As air rises, expands, and cools, water vapor condenses and clouds develop.
Why is rising air important?
Rising air is needed to produce clouds, and rapidly rising air is needed to produce thunderstorms. For air to rise rapidly, it must become buoyant compared to the surrounding air. When the atmosphere is unstable, air near the ground can become buoyant and rise rapidly through the atmosphere.
What would make that cool air actually rise again?
When air heats up and expands, its density also decreases. The warmer, less dense air effectively floats on top of the colder, denser air below it. This creates a buoyant force that causes the warmer air to rise.
Does cold air rise or go down?
So it isn’t so much that the hot air rises, but rather that the room temperature air falls more strongly and displaces it upwards. If you have a small region of cold air, gravity pulls on it more strongly and it falls, pushing the room temperature air of the way. So yes, cold air indeed drops.
Why is the air near the ceiling the warmest?
Convection is the transfer of heat by the physical movement of hot masses of air. As air is heated, it expands (as do all objects). (This is why the air near the ceiling of a heated room is warmer than that near the floor.)
Is the top of a room hotter?
Some rooms may be hotter than others if they have more windows in the room, particularly those exposed to direct sunlight. Also, since heat rises, rooms on the upper floors of a multi-level home are likely to be warmer than those below.
Is the ceiling of a room hotter?
Ceiling fans heat the room But its effect on the room it’s in is to add heat. No, it’s not a lot of heat, but just be aware that the net result of running a ceiling fan is that you’re adding heat to the room, not cooling it. [Extrapolation: Pretty much all of the electricity you use inside your home turns into heat.
What are the 4 ways fire spreads?
Generally, a fire can spread in four ways via heat transfer. These are through convection, conduction, radiation, and direct burning.