ah. I have a Siviks presentation on Wind Power tomorrow. And the hopefully Pn. J won't scrutinize every move and sentence we make.

The Sun heats up areas of the atmosphere unevenly
These warm patches rise up
and other air blows in to replace them
this is WINDDDDDD. ohhh yeah.

*sneaks a look at notes again*
ah yes.
we build a large tower with propellers at the top to generate electricity from the wind.
The wind blows the propellers round which *sneaks again*
turns a generator which produces electricity.

there.