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What happens when you add heat to air in a balloon?
The air warms and expands, becoming lighter than the surrounding air, thus lifting the balloon.
Why does a hot air balloon rise when it is heated?
Hot air has less density than air at ambient temperature. And just like with water, something that is lighter than the media that surrounds it will try to float to the top.
What makes a balloon float?
All balloons do not float. Those that do are filled with a gas that is less dense than the surrounding air, so that is is displaced upward by weight of the denser air. Small balloons are typically filled with helium, a much lighter gas than the nitrogen and oxygen in the atmosphere. Larger balloons may be filled with heated air, which occupies a greater volume and is therefore "lighter" than air outside the balloon. Some dirigibles (airships) were filled with the lighter but flammable gas hydrogen. Hydrogen can be split from water and used to fill thin plastic bags, which will also rise into the air like balloons.
Is argon lighter than air?
No Argon is not lighter than air. Argon is 25% more dense than air.
Is natural gas lighter or heavier than air?
Natural gas is lighter than air and rises.
Heated air that is lighter than the surrounding air will?
spread out
What happens when heated air is lighter than the surrounding air?
Lighter air will rise; it is the same phenomenon as an air bubble rising in water.
How does the air change as a hot air balloon rises?
As the air in the balloon is heated from the flames, the air becomes lighter. So much lighter than the surrounding air that the balloon eventually rises from the light air in it.
Why does heated air arise?
Cause its lighter than room temperature air..
What causes a hot air balloon to rise?
Fire contacting with the air inside the balloon. The heated air within the balloon is less dense than the ambient air surrounding it, therefore for the given volume it is lighter and so rises.
What forces magma to Earth's surface?
Generally, its higher temperature. The temperature of a rising magma is generally higher than the temperature of its surrounding rocks. Because of its higher temperature, it is also lighter compared to the surrounding rocks (it has a lower density), so it rises. Imagine a hot air balloon: it rises because the air inside the balloon is heated, heating the air lowers its density (makes it lighter). As long as the density of the air inside the balloon is lower than the density of the air outside the balloon, the balloon rises.
What happens when you add heat to air in a balloon?
The air warms and expands, becoming lighter than the surrounding air, thus lifting the balloon.
Why do certain gases allow a balloon to rise?
Because the gases filling the balloon are lighter than the surrounding air.
What happens to volume and mass in a hot air balloon?
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).
Why is the balloon filled with hot air?
Air expands as it is heated, hence, hot air is less dense than cool air. Hence it rises in a surrounding environment of cooler air.
How does air circulation take place?
When air is heated, it expands, it becomes lighter and goes up. Cold air is denser and heavy. That is why it sinks down. When hot air rises, cold air from surrounding area rushes there to fill in the gap. That is how air circulation takes place.
Why does fire go upward?
Flames are the gasses of combustion, heated to the point of glowing. Hot gasses, being less dense and therefore lighter than cold gasses (surrounding air) rise upward until they are redirected by some solid object.
