How to Build a Water Bottle Rocket

http://home.comcast.net/~timhesterberg/HowToRockets/HowToRockets.html#Materials

Posted by Tim Hesterberg, this website gives you a list of the materials needed as well as simple instructions on how to construct a one or two bottle rocket. This site takes you through the building process by focusing on each component of the rocket, making it easier to understand. The site also offers a link to another set of instructions on how to build a rocket as well as a link about safety tips and comments. I chose this site because it offered easy instructions and a list of easily obtainable materials that did not require the use of heavy machinery in order to build the rocket. The creator of the site also had a credible education, which was more appealing than getting my instructions from a response to a yahoo answer by an unknown author.

In this video, Colin Kilbane demonstrates how to build a water rocket and explains that a water rocket must need a launcher and a stand. He also explains how the rocket is shot into the air: model rockets use chemical energy to push the rocket up, but a water rocket uses air pressure to push the water in the water bottle down and push the rocket up. I chose this video because it is very educational and also very easy to understand. Colin Kilbane explains the trajectory of a water rocket in a way that is uncomplicated which makes it more understandable. I think this can give us more of an understanding of a water rocket to achieve the success we want.