Science Of Wind

Wind/Lift

Why does wind exist?

Because if we don't have wind we will die because wind is apart of oxygen.
Wind helps rain.
To help the trees.
To help with the leaves to come off in autumn.

In this one we add some potassium
and a lighting thing to make the water change
to purple.

We are lighting a tea bag and cause
of the heat the tea bag floated into the air.

Potassium

Wind

Why does wind exist?

The sun heats the air and hot air rises so all the other air moves in underneath it to replace it and the air is the wind.

Good effects on wind.

Fresh air

Sailing

Flying a kite

Windmills

gliding 

surfing

Bad effects on wind.

Tornado's

Hurricanes