Aim: What is the purpose of the experiment? Why are we doing it? The purpose of this experiment is to learn about aerodynamics and design a bottle rocket.
Equipment: What did you use for your experiment? 1 L&P bottle (1.5 litre), Coloured paper (we used blue and yellow), cardboard, scissors, glue stick, tape and a pen (to decorate your rocket).
Method: How we made our bottle rocket
1- Get a 1.5 litre bottle to use as the bottle part of the bottle rocket.
2- Once you have your bottle, wrap the bottle in coloured paper and tape it around. (You don’t have to do this but my group did and we wrapped it in green coloured paper)
3- Then we decorated our bottle rocket.
4- Grab the cardboard and cut 3 triangles the sames size (this is for the wings)
5- Once you have cut the wings, cut the same sizes on coloured paper. This will cover the cardboard wings in the blue coloured paper.
6- Once the wings and the coloured paper triangles are cut, glue the paper onto the cardboard wings.
7- Tape the wings onto your rocket
8- Ta da! You have made your bottle rocket (the way we did)
Results: We launched our rocket 2 times. The first time it actually worked really well, we had water in it on this launch. On our 2nd launch we had no water in it, it went basically nowhere. This shows that the better result was when the bottle rocket was filled with water.
Discussion:
1. We put 1/4 water in the rocket
2. We tipped half the water out
3. No water
We manipulated the rocket in the three ways above.
How did the rocket perform under each of the 3 ways? Putting 1/4 water in the rocket- The bottle rocket launched well and ended a further distance away, this was our first launch. We tipped half the water out- My group didn’t tip half the water out, we did it with 1/4 water and no water. I am not sure how that went. No water- this was by far the worst launch. We put absolutely no water in the bottle and it hardly went anywhere, it basically just fell on the ground.
Why was the water necessary? The water was necessary because it gave us the best result and also has pressure when the air was being pumped which caused good results.
How does this relate to forces and motion? Use words like weight, force, gravity, pressure, opposite forces, aerodynamics, unbalanced/balanced forces. The bottle rocket relates to forces and motion by using forces and motion. The water made the bottle rockets have more weight and created a force when being launched. The bottle rocket flew in the air and then hit the ground, this shows gravity. The bottle rocket (filled with water) and the launcher had, when the bottle rocket was being pumped there was pressure. Both launches that my group did were different. One launched very far and the other went not so far, this experiment is related to forces and motion.
Conclusion: Overall this experiment went well and was fun. I enjoyed making the bottle rockets with my group and seeing it fly. In our group was Lana, Nahvarna, Bettina and me (Lucy).

