Unit 12 (Let’s do an experiment)
Pupil’s book page 62 ex 4 (Read and choose)
What happens in the experiment? The balloon gets bigger
My favourite science experiment by Nader
What happens to air when it gets hotter? Try this experiment at home and observe the results. It’s enjoyable!
You need: a plastic bottle, a balloon and a bowl of hot water.
- Put the balloon over the top of the bottle.
- Put the bottle in the bowl of hot water.
- Watch what happens. The balloon inflates.
Why does it happen?
If air gets warm, it rises. In this experiment, the warm air goes into the balloon and the balloon gets bigger. This is how hot air balloons work, too.
Pre reading questions:
Do you like doing experiment? Yes, I do/No, I don’t.
What is this
rise inflate
While reading questions:
- What do you need for this experiment? A plastic bottle, a balloon and a bowl of hot water.
- What is the first step for this experiment? Put the balloon over the top of the bottle
- What is the second step for this experiment? Put the bottle in the bowl of hot water.
- What is the last step for this experiment? Watch what happens. The balloon inflates.
- What happens to air when it gets warmer? It rises.
- Does the balloon get bigger? Yes, it does
- “If air gets warm, it rises.” The underlined “it” refers to….(air)
post reading question
Do you like this experiment? Yes, I do/No, I don’t