Why do you put water in bottle rockets?

Answer 1

A 2-liter bottle will be required, as a 20-ounce is too small. Remove the label and take the cap off, but save this cap. take a pen apart and saw the barrel of the pen in half. Outline the size of the barrel on the top of the cap. Drill a hole this size into the cap. Using cardboard paper, construct 3 or 4 fins for the ship. A foam football cut in half can make the nosecone of the rocket, but a piece of paper can substitute. Once the nosecone and fins are attached, put the pen barrel in the bottlecap, and attach a bike-pump to the pen barrel. Fill the rocket with water, put the cap on, and pump air into the rocket until it blasts off.

Answer 2

It acts at the rocket's "fuel". According to Newton's Second Law every action has an equal and opposite reaction. So, when the water rushes out of the bottle due to the compressed air the rockets it propelled up.

Answer 3

In the rocket, the rocket should have water in it. When you pump air into the rocket, the compressed air wil push out the water and thus create the thrust to accelerate the rocket.

Version 2.0

Get a 2 litre bottle of Diet Coke and put mentos inside. instead of a cap, a cork is placed.

Answer 4

none. You might put some water in the bottle to weight it down but you would not put any water in the rocket.

Answer 5

You put water in bottle rockets because the water causes the bottle to go higher in the air. The water increases it and provides a larger force and the airs energy.

Answer 6

Water acts as a reaction mass in bottle rockets, providing thrust for propulsion. When it heats up and turns into gas inside the rocket, it creates pressure that pushes the rocket upwards with force.