Look what we made!

Y4 Science investigation. Do baked beans create wind?

This week we have tried to find out if baked beans cause wind. We mashed up bananas and weetabix with water and put it into two bowls. We added a can of beans to one bowl. Both bowls were covered with cling film and left in the classroom for 4 days. We hoped that it would be really obvious if beans make wind. We thought the cling film would stretch upwards and look like a balloon. 

Banana and weetabix mashed up with water and left for 4 days.

The same mixture with baked beans added. Also left for 4 days.

Both bowls look similar, but if you look closely there is some evidence that beans make wind because there are some bubbles of gas rising to the surface.