How can you make a Bottle rocket launch?How does it work?
Take fizzy drinks bottle. Place fins down the side to improve stability. The “top” of the rocket is the bottom of the bottle (i.e. the open end faces downwards). Make a bung to fit in the top. The bung must be like a cork – able to release itself once the pressure inside the bottle gets to a certain level. The bung must also have a tube through the centre. This tube should be securely attached, and sealed around the edges. Part-fill the bottle with water. Place the bottle in open ground. Use a pump to pump air into the bottle. When the air pressure in the bottle reaches a certain point, the bung will be forced out, and the rocket will launch. Do this outside. 🙂 For safety, make sure you are standing a long way away from the rocket as you pump it. The forces involved are enough to injure you. How does it work? Rockets work by Newton’s third law of motion – every action has an equal and opposite reaction. Chucking lots of mass downwards out of the bottom (the water) causes the bottle t
