Wind

What causes the wind

we saw in our experiment that heat causes air, or water, to move. this is the same force that make the wind. the sun heats up the earth, and that causes the air to heat up. that hot air then moves upwards,and other cold air has to move in to take it's place. this movement of the air is the wind!

The picture above show this process with the sun causing the 'warm' air.

effects of the wind

If we have no wind it will be raining because the wind make the weather good or bad but it help the weather. change and the tree need rain and sun so it can grow and help as. 

how wind helps us   

if we go sailing it can help us go the way we want and it will make us more so we do not stay in one place and we can go to were we want to go. And it can help us with so much more in stuff that we need to do.