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Science Fair Project: Biomass and Biogas

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If you're ready to tackle something related to energy, power, and the environment but want to push the envelope a bit farther than the cool (but maybe not quite cutting-edge-enough-for-you and just a bit ubiquitous) Veggie-Powered Batteries, pull on your rubber gloves, grab a nose-plug (totally optional), and check out the ins and outs of biomass and biogas.

From Trash to Gas: Biomass Energy (grades 6-8) has you roll up your sleeves, fill up some soda bodies, and monitor differences in biogas production. In other words... what waste will inflate the balloon fastest?

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My daughter is doing a similar biogas experiement to your From Trash to Gas: Biomass Energy with the balloons but using light/dark and warm/cold to be the variables. But the balloons are not growing veyr much. It has been 1 week so far. How long should it take to see the biogas start to develop? Wondering if we need to start over. Thanks.

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