I put this episode together to help a subscriber who has to do a Science Project on making renewable energy from recycled materials.
I found a few projects around the house I had built in the past, they are mainly based on Direct Current Motors being turned by some device to produce electricity. So using thrown out exercise bikes, electric scooters etc to generate electricity to power lights and motorized butterflies!
The finale is where I teardown a printer/scanner which had been thrown out, and using the print rail, generate electricity to make a creepy dolls eyes light up…
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solar energy model science project for science exhibition | howtofunda

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The material used in crafting this model (along with Amazon Affiliate Links for Buying it):
Color Sheet – https://amzn.to/2Z1jo76
Car Toys – https://amzn.to/2Z071YS
Color Kit: https://amzn.to/2Ml4amJ
Scissor: https://amzn.to/2YYMgNw
Glue Gun: https://amzn.to/2KDqxlf
Fevicol : https://amzn.to/2MpHXnq
Animal Toys : https://amzn.to/2NfLwfI

You can easily find all the videos that you need on my website, along with other great revision resources. Check it out www.freesciencelessons.co.uk

In this video, we look at what is meant by efficiency of energy transfer. We learn to calculate efficiency and then I show you the most common mistake that students make in this calculation. Finally, we explore ways to increase the efficiency of energy transfer.
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