A balloon is filled with helium, which is less dense than the air around us. Because of this, it is able to float. But, over time, the helium leaves the balloon making it fall again.
No, not directly ... it needs gravity to be present, but gravity alone won't do it. There's plenty of gravity on the moon, but a helium balloon won't rise there. A helium balloon floats in air, for exactly the same reason that a block of wood floats in water. Look up "Archimedes' Principle" and read about it.
Buoyancy is the power to float or rise in a liquid and it acts against the force of gravity.
Gravity affects all objects regardless of whether they are inside a balloon or not. However, the air pressure inside the balloon might counteract the effects of gravity for a short period, but ultimately gravity will cause the balloon to fall.
The hypothesis of the magic balloon experiment could be that when air is heated, it expands and becomes less dense, causing the balloon to rise. Alternatively, it could be that the balloon rises due to the buoyant force of the heated air inside the balloon being greater than the force of gravity pulling it down.
When you rub a balloon against your hair, it becomes negatively charged due to the transfer of electrons. This negative charge creates an electrostatic force between the balloon and the wall, causing it to stick. The force between the negatively charged balloon and the neutrally charged wall is strong enough to counteract the force of gravity and keep the balloon from falling.
No, not directly ... it needs gravity to be present, but gravity alone won't do it. There's plenty of gravity on the moon, but a helium balloon won't rise there. A helium balloon floats in air, for exactly the same reason that a block of wood floats in water. Look up "Archimedes' Principle" and read about it.
Yes. Without gravity, a hot air balloon would rise infinitely. You could never return to the ground. Balloons tend to hover more or less. The force of the air pushing up on the balloon and the force of gravity pulling down on the balloon are usually very close to one another. This keeps the balloon at a steady height, unless you heat the air in the balloon, or let it cool.
Erm.. no.. i believe its Buoyancy... this force causes u the hot air balloon to rise.. not Gravity..
I am not sure what you mean by 'depend' (please try and make your questions clear) but if you mean does the fact that a helium filled balloon will float (or rise) depend on gravity? Then the answer is Yes. if you were to take a helium filled balloon to the space station and release it inside, it would not rise, it would behave just the same as if you released a bunch of keys.
Buoyancy is the power to float or rise in a liquid and it acts against the force of gravity.
Gravity affects all objects regardless of whether they are inside a balloon or not. However, the air pressure inside the balloon might counteract the effects of gravity for a short period, but ultimately gravity will cause the balloon to fall.
The hypothesis of the magic balloon experiment could be that when air is heated, it expands and becomes less dense, causing the balloon to rise. Alternatively, it could be that the balloon rises due to the buoyant force of the heated air inside the balloon being greater than the force of gravity pulling it down.
When you rub a balloon against your hair, it becomes negatively charged due to the transfer of electrons. This negative charge creates an electrostatic force between the balloon and the wall, causing it to stick. The force between the negatively charged balloon and the neutrally charged wall is strong enough to counteract the force of gravity and keep the balloon from falling.
The helium balloon rises in air because the density of helium inside the balloon is less than that of the surrounded air that is displaced by the balloons volume. So the balloon is lighter than the surrounding air. Ice cubes float in a glass of liquid water for the same reason.
A balloon filled with helium rises until it reaches a point in the atmosphere where the density of the surrounding air equals the density of the helium inside the balloon. At this point, called buoyant equilibrium, the balloon stops rising because the forces of gravity pulling it down are balanced by the buoyant force pushing it up.
It does affect a nitrogen balloon.
Yes, Gas does have a gravity. Gravity affects anything and everything that has a mass. But as the gravitational force is directly proportional to the mass, and since gases have a very very low mass, The force exists but is very low. If gases were not affected by gravity, the atmosphere would not exist!