Pump the air out of an airtight container using a hand
pump and create a real vacuum.
A variety of experiments can be performed:
- compare the size of a balloon
- study the impact on food by placing half an apple
inside
- compare the sound of a ringing mobile phone
- demonstrate the principle of air resistance by using
down feathers
Dimensions of the container ΓΈ 12 cm, height 7 cm