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How do changes in temperature of air affect its density?
if it is high the density is high so if the temperature is low the density is low.
What has a low mass but a high volume?
A hot air balloon.
What are the two forces that affect a hot air balloon?
The downward force of gravity, and the upward buoyant force resulting from the low density air inside the balloon.
What do changes in density cause air movement?
Low density air rises, higher density air moves in to take its place.
Does air have a very low density?
Compared to liquids and solids, yes a very low density.
What might limit how high a hot air balloon get?
The density of hot air is lower than air at low altitudes, but the air at higher altitudes is very thin. A hot air balloon can only rise until its density equals the surrounding air.
What might limit how high a hot air balloon can get?
The density of hot air is lower than air at low altitudes, but the air at higher altitudes is very thin. A hot air balloon can only rise until its density equals the surrounding air.
How do changes in temperature of air affect its density?
if it is high the density is high so if the temperature is low the density is low.
How is convections enegry transferd?
when the hot air rises up with low density , it gets absorbed by the surrounding cool air,which then sinks down due to the high density that is how the energy is transfered
What is pressure in air?
warm air is low densitycool air is high density
Is the density in warm air high or low?
As temperature increases, density decreases.
What is the movement of air from an area of low air pressure to high air pressure?
density
Does carbon dioxide has high or lower density than air?
Carbon dioxide is more dense than air.
What is low air density?
= What is low air density? = well, high or low are relative concepts. Normally the standard air density of the air is defined as the density of the air at 15ºC and at sea level pressure (standard conditions), what give a value of 1,225kg/m3. This way, we can talk about high or low air density related to the standard value. Air density depends on temperature and pressure. The colder the temperature the higher the density is, and the higher the height in the atmosphere the lower the density becomes. In the Everest peak, e.g., air density can be lower than 0,5. Meanwhile in the Antarctica (at sea level) the density could reach values higher than 1,5.
Will a hot air balloon fly better on high pressure or low pressure?
High pressure. A hot air balloon has a maximum altitude, where it has only just enough lift to keep it there, because there is very little difference in density between hot (near) vacuum and cold (near) vacuum.
Why is air presure low when air is cold?
High pressure in weather is cold, and low pressure is hot.
What has a low mass but a high volume?
A hot air balloon.
