Cool science

Can you blow up a balloon by putting a bottle in hot water? Read all four paragraphs to find out how to do an experiment with things that you can find just lying around your home. The first paragraph is what you are reading now  the second paragraph is about what you will need to do the experiment the third paragraph is how to do the experiment the paragraph is about observing and the last paragraph is about observing and it also contains the answer.

First you will need two large plastic bottles,two balloons,two buckets or anything that will hold a lot of water.hot water,cold water and something like tongs to hold the plastic bottle under the boiling water. You will definitely need and outside space so you can’t get the floor wet your mum and dad won’t like that at all.

Ok time to do the experiment go outside with all your gear and but the two buckets on the ground fill one with hot water and one with cold water. Take a balloon and a plastic bottle get the cap of the bottle and put the balloon over the top of the bottle so the balloon is over the lip of the bottle. Repeat with the other bottle then hold one of the bottles under the cold water so that it is completely immersed which means completely under water what happens? Now take the other bottle and put it in the hot water so that it is fully underwater make sure you hold it under water with the tongs so you don't get burnt. What happened did it make a difference?

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What happens?

The bottle in cold water stays the same in other words a state of inertia and the bottle in hot water blows up the balloon so you can easily blow up a balloon without blowing.

How does it work? The air in the bottle gets heated because the heat of the water goes into the bottle. The hot air tries to float up as the hot air stretches and the only place it can go is in the balloon so it goes in and blows it up then when you put the blown up balloon in cold water the air gets cold then the amount of air gets smaller as the air stops floating and sinks into the bottom of the bottle. Here is a diagram of how it works the arrows are the air.