Lighter air will rise; it is the same phenomenon as an air bubble rising in water.
Hot air, hydrogen or helium are lighter than cold air.
When the air is heated inside the balloon, it expands, causing it to be lighter than the surrounding (and presumably) cooler air. One imagines however, that as the air inside the balloon is heated, some air is forced out (due to expansion), thus resulting in a decrease in the entire apparatus' overall mass (not to mention a decrease in mass due to any fuel's having been used to heat the air in the balloon).
When magma is being heated it rises. When it is cooled, it sinks.
-- blimp -- Zeppelin -- dirigible -- hot-air balloon
Yes, paint solvent vapors are typically lighter than air, which causes them to rise and disperse into the surrounding environment. This property can lead to an increased risk of inhalation exposure in poorly ventilated areas.
Heated air that is lighter than surrounding air will rise, as it is less dense. This process creates convection currents, with cooler air moving in to replace the rising warm air.
rise upwards because it is less dense. As the heated air rises, it cools, becoming more dense, and eventually will fall back down once its temperature is similar to the surrounding air. This process is known as convection.
When air is heated, it becomes less dense and therefore lighter than the surrounding cooler air. This lighter, warm air will rise because of the buoyant force. Conversely, when air is cooled, it becomes denser and therefore heavier, causing it to sink.
because..................................................................................................................... density of heated gas is lower than cooled gas.
Without having the information about what the options are there really is not any way to know which is lighter than aircraft. The rest of the information needs to be provided for the correct answer to be given.
Heat rises because when a substance is heated, its molecules gain energy and move faster, causing them to spread out and become less dense. This decrease in density makes the heated substance lighter than the surrounding cooler air, causing it to rise.
Cause its lighter than room temperature air..
Hot air balloons are typically filled with hot air, which is lighter than the surrounding cold air, allowing the balloon to float. They do not contain specific gases, other than the air heated to lift the balloon.
A hot air balloon is lighter than air because the air inside the balloon is heated, which causes it to become less dense than the surrounding air. This buoyant force allows the balloon to float in the air.
When air inside the balloon is heated, it becomes less dense and lighter than the surrounding cooler air. This lighter air creates a buoyant force that causes the balloon to rise. As the air inside cools down, the balloon will begin to descend.
if it is heated above 1200 degrees celsius than it melts
Air inside the balloon is heated. Hot air is less dense than the surrounding air, and thus the balloon rises.