Table of Contents
How does air pressure affect a balloon?
The stronger outside air pressure compresses the balloon. As the balloon volume decreases, pressure inside the balloon increases. It eventually is able to balance the outside air pressure.
What gas law is the balloon in a bottle experiment?
Boyle’s law
This experiment is a perfect illustration of Boyle’s law, which states that as the pressure on a gas increases, its volume decreases. As the bottle filled with more air, more molecules collide with the outside walls of the balloon, causing the balloon to shrink.
What happens to the pressure inside the bottle when the balloon expands?
This is because the high pressure air in the balloon pushes outward harder than the low pressure air in the bottle. The air in the balloon pushes out against the walls, keeping it inflated. When the hole is unplugged, air flows back into the bottle. The air pressure in the bottle increases and collapses the balloon.
What happens to the pressure of the air in the bottle?
Even though you put a hole in the water bottle, since the cap is on, the air pressure pushing on the outside of the bottle will keep the water inside. When you remove the cap, the air pressure changes. Air starts pushing down on the water inside the bottle and it pushes out of the hole!
What type of pressure causes a balloon to expand?
As a weather balloon rises into high altitudes, where air pressure decreases, the helium or hydrogen pressure inside the balloon increases and expands the balloon. This way the balloon and the radiosonde can rise at a consistent pace high into the atmosphere. Balloons zoom upwards at around 1,000 feet per minute.
What causes pressure inside a balloon?
Gas pressure is the pressure that results from collisions of gas particles with an object. Inside the balloon, the gas particles collide with the balloon’s inner walls. It is those collisions which keep the balloon inflated. If the gas particles were to suddenly stop moving, the balloon would instantly deflate.
What do you think happens to the balloon if air is blown to the plastic bottle?
As the air in the bottle cools down, the molecules of the air slow down and take up less space because they move closer together. The air then moves out of the balloon and back into the bottle, causing the balloon to deflate.
What made the balloon inside the bottle expand Boyle’s Law?
Air is blown into the balloon; the pressure of that air pushes on the rubber, making the balloon expand.
What caused the balloon to inflate when you squeezed the bottle?
WHAT IS HAPPENING? When you stretch the balloon over the opening of the bottle, all of the air is trapped inside. Putting the bottle in hot water causes the air molecules inside to heat up and begin taking up more space (thermal expansion), causing air to enter the balloon and inflate it.
Is pressure inside a balloon greater?
A balance of forces: The pressure inside an inflated balloon is greater than the pressure outside it. The balloon is stable because the expanding force due to the pressure difference is balanced by the contracting force exerted by the surface tension of the rubber.
How does pressure work in a water bottle?
When you cover up the lid to the bottle, the water is pulling down but that air up in the top of the bottle is becoming a vacuum. That means “low pressure.” The air pressure outside the bottle is higher, so it actually tries to push into the bottle through the bottom hole. In doing so, it keeps the water in!
What caused the deflation of the balloon inside the bottle?
Why does a balloon expand in low pressure?
When a balloon goes up higher in the air, its size will increase. Since there’s less air in the upper atmosphere, there’s less stuff pushing back on the balloon, and hence the pressure is lower, which allows the balloon to expand.
What can be said about the pressure of an inflated balloon?
Which balloon has higher air pressure inside?
Air exerts pressure. When a balloon is inflated its surface feels tighter due to the air pressure on the walls. The balloon gets its shape from the air pressure inside. Hence, the inflated balloon will have greater air pressure.
How was the air inside the balloon different when the bottle was placed in the hot and cold water?
(Gases always expand when they’re warm – the heat gives the gas energy to spread out more). The expanding gas blows up the balloon. When you put the bottle into cold water, the air cools down again.
Why did the balloon inflate when the bottle was placed in hot water?
When you stretch the balloon over the opening of the bottle, all of the air is trapped inside. Putting the bottle in hot water causes the air molecules inside to heat up and begin taking up more space (thermal expansion), causing air to enter the balloon and inflate it.
What happens inside when an air filled balloon is squeezed?
When you squeeze an air-filled balloon, what happens inside? It doubles in volume.
What are your observations is it possible to inflate the balloon inside the bottle?
Because the bottle is already filled with air, there’s no room for the balloon to expand inside. However, when you punch a hole in the bottle, the air molecules have an exit, so the next time you try to inflate the balloon, the air is pushed out the hole as the balloon fills the space inside.
Why does the smallest balloon have the highest air pressure?
This happens because the pressure inside the smaller bubble is greater than that inside the bigger bubble : the pressure difference between the outside and inside of any soap bubble is inversely proportional to its radius.
How to conduct an air pressure balloon experiment?
How to Conduct an Air Pressure balloon Experiment: Fill the balloon with water so that it is just too large to fit down inside the jar and rests on top. Show the kids how the balloon won’t fit through the opening. Ask the kids if they think it is possible for the balloon to enter the jar. Light a piece of paper on fire and drop it into the jar.
What happens when you put a balloon in a bottle?
Just like the classic egg in the bottle experiment, this experiment demonstrates how air pressure can be used to push a water balloon into a bottle. As the air inside of your bottle is heated by the burning paper, it expands. The expanding air pushes up and escapes out the top of your bottle.
How do you show air pressure in science?
For another cool way that demonstrates air pressure check out this Balloon in a Bottle Experiment. The higher pressure inside the bottle is created by the balloon air rushing into the bottle. The high pressure in the bottle then tries to escape to the lower pressure outside and pushes water through the straw!
How can I make air pressure experiments fun for kids?
To make this air pressure experiment even more fun for kids, let each child pick a balloon to decorate before you fill it with water. This allows children to observe any differences between how the balloons behave, such as which balloon was most difficult to remove and which one worked best.