Because it is lighter than cooler air.
Yes, hot air rises, cold air falls.
An advantage of an air conditioner is that people will not be hot in the summer. A disadvantage is that it will raise the electricity bill.
You change the volume or the weight of the balloon to raise it or lower it into air currents that are traveling where you want to go.
To raise a hot air balloon above trees, you would need to increase the heat in the balloon by firing up the burner. The hot air will make the balloon lighter than the surrounding air, causing it to ascend. Piloting the balloon to catch different wind currents can also help in maneuvering it safely above the trees.
It typically takes around 65,000 cubic feet of heated air to lift a hot air balloon, depending on its size and weight. The burner heats up the air inside the balloon, causing it to become less dense than the air outside the balloon, which creates lift.
big juicy ear lobes, the size of melons
The amount of fuel needed for a hot air balloon depends on factors like the size of the balloon and the duration of the flight. On average, a hot air balloon can use around 20-40 gallons of propane fuel per hour of flight.
the hot air is more dense then the actual air
hot air is when you get hoott
hot air rises
hot is hot cool air is cold
Hot air makes a hot air balloon rise because hot air is less dense than the cooler air around it, so the hot air balloon floats on the cooler air around it.