Help with science project!!?

Question

hey there people,
i gotta do a science project and our teacher says it'll be best to do a working model. We ot 9 topics and have to do one 1 of them. Have a look

Bio: Eco-friendly home made dyes/fuels/pesticides
Effects of smoking/alcohol on human health
Recycling of wastes to form useful products

Phy: Electricity
Magnetism
Sources of electricity

Chem: 10 egs of Word eq, skeletal eq, balanced eq.
Flowchart on extraction of metals from ores
Reactivity series

I know chem has such dumb topics and the teacher herself was advicing us not to do chem but phy as there are a whole lot of things we can do in phy. If at all, you can help me suggest some ideas and sites for an attractive, intresting working model on any of the above(even bio), please please do it.

Thnx

Answer 1

How do you frighten a grasshopper? And what does that have to do with light?" These are a couple of questions you're probably asking yourself after reading the title. Well, The Frightened Grasshopper Solar-Powered Bug is actually a toy grasshopper that vibrates when it is placed in sunlight or near a lightbulb. It stores up the energy from light, and converts it into motion. You will use this fun toy to explore how the brightness of the light affects the motion of the solar-powered insect, This is one i picked for you, insructions at the first link, if you dont like this one go to the second link and pick your own.

Answer 2

Pick Phy: Electricity !!!

You can build a parallel circuit.



it's pretty easy.

Answer 3

http://www.how-things-work-science-projects.com/magnet-science-projects.html