How to Make a Pop Bottle Rocket With Water

This will teach you how to make a pop bottle rocket.

Difficulty: Easy

Instructions

Things You'll Need:

• cork
• 2 liter bottle
• duct tape
• knife
• pump and ball needle

1. Step 1: Remove the wrapper on the bottle with hot water.

2. Step 2: Make sure the cork will fit snugly in the bottle. If it slides, create a layer of duct tape over the cork then that should do it.

3. Step 3: Make a whole in the cork with the basketball needle. You may have to cut the cork in half because it may be to long for the needle to fit through. (Again, if you need to shorten the cork, have an adult do this step)

4. Step 4: Fill the bottle half way with water then you are almost ready for launch.

5. Step 5: I recommend to not launch it in the grass unless you want to get muddy. You can launch from a sidewalk or driveway instead. Find a pretty big rock and balance the rocket on it with corked end down. Rocket should be at about a 45degree angle. Put the needle on the pump and through the cork and start pumping and soon enough the cork will pop off and your water rocket goes flying.
   (you can use it as many times as it will stay together)

Tips & Warnings

• make sure every thing fits snug
• don't stand over rocket when about to launch