Exploring Homemade Rockets
Key concepts
Chemical reactions
Physics
Gravity
Rockets
Thrust
Pressurization
Introduction
Have you ever marveled at how fireworks, toy rockets or real spacecraft can launch into the air? It can be an amazing thing to witness. It is thrilling to see something lift off against Earth's gravity. The strong push required to launch a spacecraft comes from a chemical reaction in its rockets. This means that every time you see a spacecraft launch, you're watching chemistry at work. In this activity you'll get to blast an object into the air using two simple household ingredients: baking soda and vinegar. Investigate how to mix these chemicals to get the best lift off, and then this Independence Day you could give your family a homemade, gravity-defying show!
How to explain Conduction,Convection and Radiation
Heat flows.
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| Liquid Crystal thermometers |
Liquid crystal thermometers portray temperatures as colors and can be used to follow temperature changes caused by heat flow. They can be used to observe that heat flows by conduction, convection, and radiation.
Material
Material
- Liquid crystal thermometer
- stopwatch
- ruler
- flat pieces of metal, about an inch wide and at least four inches long
- adhesive to attach liquid crystal material to the metal pieces
- lightbulb
- hot and cold water in open top containers
- a thermometer
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