Kia ora welcome back or welcome to my blog. Today I will be talking about the bottle Rockets we made in science. We’ve been looking at forces and motions in physics and understanding how that works in our everyday lives.
Aim: The aim of this experiment is to learn and understand aerodynamics, forces and motion.
Equipment:
- Plastic 2 litre coke bottle
- Cardboard
- Popsicle stick
- Paper cup
- Tape
- Scissors
- Launcher.
- Sharpie
Method:
- First start by getting a plastic 2 litre coke bottle.
- Cut out four wing shapes from the cardboard.
- Tape wings to the bottle, evenly spaced out through the bottle.
- Cut the end off of the Popsicle stick.
- Stick the Popsicle stick, flat side down, to the middle bottom of the bottle.
- Cut a hole shaped like the Popsicle stick to the middle of the paper cup.
- Stick the paper cup through the Popsicle stick to make the nose.
- Tape the paper cup down.
- Decorate.
- Launch.

- we put 1/4 water in the rocket.
- We tipped out half the water.
- No water.
We manipulated the rocket in the three ways above.
- How did the rocket perform under each of the three ways?
1/4 water was a little too much, and it did not travel as far.
1/8 water was just enough, and it travelled the furthest.
No water caused the bottle to blow up. - What was the science behind it?
There was so much pressure in the bottle it had to go somewhere, so it launched the bottle away. - Why was the water necessary? To prevent the preasure from building up to much and inevitably blowing up our rockets.
- How does this relate to forces and motion? The pressure buildup is what caused the launching of the bottle Rockets. The ones with the perfect amount of water could travel the furthest. The thinnest bottles tended to go the furthest of them all.




