How to design and build a balloon car.
To design and build a balloon car, follow these steps:
1. Gather materials: You will need a piece of cardboard, four plastic bottle caps, two straws, a balloon, scissors, tape, glue, and a pencil.
2. Cut the cardboard into two equal-sized rectangles. Use the pencil to draw a line down the center of each piece.
3. Cut the straws into two equal-sized pieces. Place them on each side of the line you drew in step 2, and secure them with tape.
4. Attach the plastic bottle caps to the ends of each straw piece, securing them with glue or tape.
5. Place one of the cardboard pieces on top of the other, aligning the straws on each side.
6. Blow up the balloon and attach it to the plastic bottle cap at the back of the car with tape.
7. Release the balloon and watch your car go!
Adjustments can be made to the placement and size of the straws, the shape of the car, and the size of the wheels to optimize the car's speed and performance.