how does a wind turbine produce electricity?

i have homework for school and i have no idea what the hell i have to do! this is the brief that was given:

You will be expected to describe how to produce an electric current by rotating a magnet in a coil of wire, as in a dynamo, and to describe the factors that affect the size and direction of an induced voltage.

please can someone help?

thanks.

Which electrical generation methods use a turbine?

And how does a turbine work?

Where can i buy an Electrical Motor/electrical generator?

Like the ones in treadmills. the kind the produces energy when the wheel is spun buy a wind turbine
Like the ones in treadmills. the kind the produces energy when the wheel is spun buy a wind turbine
NOT EBAY

Can I use an electric motor as a wind generator?

Can I use this item below as a generator?

http://cgi.ebay.com/110-VOLTS-700-WATT-DC-WIND-GENERATOR-MOTOR-LATHE_W0QQitemZ260354038649QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item260354038649&_trksid=p3286.c0.m14&_trkparms=72:1205|66:2|65:12|39:1|240:1318|301:1|293:1|294:50