What do wind turbines do to moving air?

The giant fans you sometimes see (mostly in the countryside) are wind turbines. Although they look like fans, spinning around in place, functionally, they're the opposite of fans. Instead of using electricity to generate wind, as fans do, wind turbines use wind to generate electricity. Sound interesting? Let's find out how.

They transform kinetic (mechanical/moving) energy into electrical energy that is used to run homes and such.