Science KS2: What causes us to burp and break wind?

What is a burp and fart, and why do they smell?

Zoe and the class do an experiment with effervescent tablets to see the explosive effects of trying to contain carbon dioxide in a small space.

CGI graphics demonstrate how bacteria in our gut create gasses.

Zoe explains how the body, by eating and swallowing, also swallows gas that can come out of the body as a burp.

The class deflate an enormous whoopee cushion by jumping on top of it.

This short film is from the BBC series, Amazing Me.

Teacher Notes

Pupils could study bacteria and how there is good and bad bacteria.

Bad bacteria can harm the body and good bacteria can help us extract nutrients from our food. Look at how industry uses bacteria to break down waste material such as recycled food, and from sewerage to create power and electricity. Compare the systems to what's happening within the human body.

Pupils could create a poster to illustrate how bacteria can create electricity.

Curriculum Notes

This short film will be relevant for teaching the topic of the human body at KS2 in England, Wales and Northern Ireland and Second Level in Scotland.

More from Amazing Me

Digestion - how does breakfast affect your day?
How do muscles and bones work?
Respiration - how is oxygen transported round the body?
Teeth - how they help animals eat
How our circulatory system keeps us alive
How the human body grows