Science Experiments

How does a submarine work?

Sat, 22nd Apr 2006

Part of the show Coral Reefs and Creatures of the Deep Sea

What you Need

A bottle

A large lemonade bottle full of water

Blue Tack

Some plasticine or blue tack

A Pen Lid

A pen lid


It also works with a ketchup packet weighted with a paperclip instead of the pen lid


What to do

1- If you are using the penlid, use some plasticine to block the hole in the top, then add plasticine to the bottom of the lid until it just floats

2- Fill the bottle up to the top

3- Float the lid or sachet in the bottle.

4- Put the lid on the bottle


What may happen

When you squeeze the bottle you should find that the diver ( the penlid / sachet ) sinks and then when you stop squeezing it should float again. You should be able to repeat this as often as you like.


Not working please enable javascript
Powered by UKfast
Genetics Society