Your Own Flight
Make Your Own Hot Air Balloon

Teachers' notes

Hot air is less dense than cold air. So hot air floats upwards. If you fill a 'balloon' with hot air, it may float upwards too. 

Illustration 

Find a large plastic bag. Use a bag made from the very thinnest kind of plastic. 

 Fill the balloon with hot air, using a hairdrier. Never use a naked flame.

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