the outer covering contracts
basically until you decide to release the air/water or whatever from your belly
so the air bag doesn't suffocate the person
If it's in a car, hot air is just the engine's "spare" heat, therefore cost-free and cheaper than cold air...
Deflation has a few different meanings. It can mean reducing prices in an economy. In geology, it may refer to removing rock and particles via the wind. It can also mean the process of something being released causing collapse.
evaporation then condensation
Depends on a lot of factors. Climate can effect how long a basketball holds its bounce. Really cold weather (below 50) will cause a basketball to loose it's bounce rather quickly. If stored at room temperature, a basketball should hold its bounce for around 3-6 months.
A leather basketball has a inner rubber bladder which is inflated with air.
The volume of the balloon decreases
Because the heat causes the air inside the basketball to expand, which increases the pressure in the ball.
yes, but it is dependent on how hot the air was when the tier was first inflated.
an inflated because it takes up more room than a deflated one It depends on how you define the basketball. If you define it as just the rubber, then the mass does not change when it is inflated. If you consider the air inside the ball to be part of the ball then adding more air adds more mass. Mass is "stuff". Air has mass because air is stuff.
Temperature can affect a couple of different variables in a ball to alter the distance it will travel from an impact. For inflated balls, the temperature can change the air pressure inside the ball giving an over inflated effect if it was warmed, or and under inflated effect if it was cold. (Have you ever tried dribbling a basketball without enough air in it?) The amount of air pressure then is directly proportional to the temperature of the air inside.
It decreases. The colder air contracts, making the balloon shrink.
It becomes slightly deflated because the air inside it contracts on cooling.
== == This is because of air's tendency to become more dense when it is cold. This happens because air molecules,when cold, move slowly and close together while air molecules,when warm, move fast and farther apart.
Cold air is dense.
Regular air is perfectly acceptable. To fill it, get a bike pump with a small needle that will fit the small black hole on your basketball and pump air through the tube on the system, through the needle and into the basketball until it is inflated as much as you like. You can buy a bike pump/air pump at almost anywhere including walmart or walgreens.