Hot air balloon - hot air rising is what causes wind Hot air is lighter than cold air When something is hot, its molecules are farther apart than when it is cold. When air [...]
A tornado in a bottle You can make your own tornado to see how it works. Fill a one or two liter bottle, like a soda bottle, with water. Add a bunch of [...]
See how the degrees match up. To prove to yourself what temperature water freezes and boils at, fill a pan with ice from the freezer. Stick a thermometer in it (not a fever thermometer! Use [...]
A cloudy glass of water You can see for yourself that blue light scatters more than red light. This is the same way that John Tyndall showed why the sky was [...]
Still in their coats on a sunny day(Thanks to [seattle + beyond]) To see what a difference it makes whether sunlight hits the Earth directly or at an angle, just think about a sunny day in summer and [...]
Track how long the days are and how warm it is at different places all over the world You can track the changing seasons for yourself. Try writing down in [...]
People driving cars in the rain Some of the tiny particles inside the clouds - the cloud seeds - are made of pollution from cars and factories. They're little particles [...]
A lot of rubber balloons. You can create your own static electricity and then discharge it like a tiny lightning bolt. Take a rubber balloon (just a regular balloon) and [...]
Making your own hot air balloon (Thanks to American Aircraft Modeler) How to make a hot air balloon You can make your own tiny hot air balloon to see how [...]
See the steam coming out of this kettle? You can make your own clouds and see how they work. Just take a tea kettle and fill it full of water and put it on [...]
