Kia Ora,
In science, we have been learning about forces, motion, drag, friction, and acceleration. One of the main activities we did to help us understand these concepts was a balloon rocket experiment. This was a fun and simple way to see how forces work in real life, and it really helped me understand how air pressure and motion are connected.
To do this, we blew up a balloon and let it go while it was attached to a straw on a piece of string. As the air rushed out of the balloon, it pushed the balloon forward along the string. This demonstrated Newton’s Third Law – for every action, there is an equal and opposite reaction. The air pushed backwards, and the balloon shot forward. Watching it happen made the idea of force and acceleration much easier to understand.
We also learned about friction and drag during this experiment. Sometimes the balloon didn’t move smoothly, and we realised it was because of the friction between the string and the straw or the angle of the setup. We had to adjust things like how tight the string was or how we positioned the straw. This helped us see how friction can slow things down or stop motion altogether.
The balloon experiment also helped us understand acceleration. When we let go of the balloon, it started moving slowly but quickly sped up – that’s acceleration. It also stopped once the air ran out, showing how motion depends on the continued force acting on it.
Doing this activity was fun, but it was also a good challenge. I had to work carefully with others, observe closely, and think like a scientist. We made predictions, tested them, and talked about what we saw. If something didn’t work, we didn’t give up – we tried to figure out why and fix it.
This activity made me realise that even small experiments can teach big ideas. It also helped me improve my communication and teamwork skills. I feel more confident now talking about scientific concepts like force, friction, and acceleration.
Next time, I’d like to try changing the size or shape of the balloon to see how that affects how far or fast it moves. Science is all around us – and it’s awesome when we get to learn by doing.
Ngā mihi,
Dez