spread out
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.
Hot air balloons fly due to the principle of buoyancy. Heated air inside the balloon is lighter than the cooler air surrounding it, causing the balloon to rise. The burner inside the balloon heats the air, which expands and becomes less dense, lifting the balloon off the ground.
Lighter-than-air balloons are aircraft that achieve buoyancy and rise in the atmosphere by being filled with gases that are less dense than the surrounding air, such as helium or hot air. These balloons rely on the principle of buoyancy, where the lighter gas displaces a greater weight of air, allowing them to float. Common types include hot air balloons, which use heated air, and gas balloons, which are filled with helium or hydrogen. They are often used for recreational purposes, scientific research, and advertising.
the heated air inside of the balloon has less density than the cold outside air so the hot air is more buoyant (e.g. the bowling ball sinks but the beach ball floats because the density of the beach ball is less than the water)
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.
When heated air is lighter than the surrounding air, it will rise due to convection currents. This process is known as thermal expansion, where hot air becomes less dense and more buoyant, causing it to ascend. This can lead to the formation of clouds and eventually precipitation.
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.
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.
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.
Cause its lighter than room temperature air..
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.
As air near Earth's surface is heated by the sun, it becomes less dense and lighter than the surrounding air. This lighter, warmer air rises due to convection, creating vertical air currents. As the air rises, it cools and may condense to form clouds and precipitation, playing a key role in the Earth's weather systems.
Farts rise in the air because they are lighter than the surrounding air.
Hot air, hydrogen or helium are lighter than cold air.
When air is heated, its density decreases because the air molecules gain energy and move faster, causing them to spread out and take up more space. This results in the warmer air being lighter than the surrounding cooler air, leading to buoyant forces and causing the warm air to rise.