Modern hot air balloons do not have sand bags because the air input is easily controlled for lift. Hot air balloons used to have sandbags to weigh them down until lift off and sand was gradually dumped to gain height in the air.
hot air balloons, colorful ones what kind of simple quesion is this!
Helium is safer than hydrogen in hot air balloons because it is non-flammable. Hydrogen can ignite easily, posing a greater risk of fire. Additionally, helium is more stable and its lifting capacity is sufficient for use in hot air balloons.
Gases used are: air (and hot air), helium.
Hot air, hydrogen or helium are lighter than cold air.
Helium is a chemical element, and its most common form is a gas at room temperature and pressure.
No, balloons cannot pick up sand because their buoyancy is not strong enough to lift particles as heavy as sand. Balloons are typically filled with helium or hot air, which is not capable of lifting denser materials like sand.
There are traditional hot air balloons, special-shaped hot air balloons (such as animals, objects, or characters), and solar-powered hot air balloons that use solar energy to heat the air inside.
Hot air balloons float because hot air displaces cool air in the atmosphere
air balloons or hot air balloons fly because they fill with a very light type of air. The air is hot air.
This may not help, but I didn't think it had ANYTHING to do with hot-air balloons...
People think that hot air balloons where made for battles.
when do hot air balloons cometo bucyrus ohio
hot air rises
Hot Air
Hot-air balloons can rise up into the air because hot air is lighter, allowing it to float up into the sky.
Hot air balloons are now mostly used for leisure
Hot air balloons do not use helium; they are typically filled with hot air. Helium is non-flammable and more commonly used in other types of balloons like weather balloons or party balloons. The hot air inside a hot air balloon is what allows it to rise and float.