風係點黎嫁?

風既來源有好多....
可能是人為的...開動風扇~~冷氣機~~等等
如果你是問自然的風亦有很多

你試想一下,有一些空體定在一個位置不動,而地球就在自轉,我們跟住地球一直轉
但空氣就不動(因為在,越高的地方,地心引力就越細,高空和地面的引力不同,自然轉速也會不同)我地移動但空體不移動,咁對我們來說就有風(因為相對論)

而熱的對流也有影響
好像龍卷風一樣,冷的空氣,分子之間振動比較少,所以密度較高,密度較高就會掉下來,而相反熱的空氣,分子振動較多,密度就疏了,就浮向上空

Wind is the movement of air mass, which is due to pressure difference.
In a large scale, winds on earth is due to differential heating of the atmosphere by the sun (i.e. some parts of the atmosphere receive more heat than the other parts), thus creating regions of different atmospheric pressures, this causes air to move from high pressure region to low pressure region. Exmples are monsoons, tropical cyclones, land and sea breezes.
In a small scale, pressure difference can be created by various means, either natural (like different heating, and hence different temperatures, on a sandy ground and on the grass in a green park in a town) or artifical (heat sources like cooling towers), all these cause air to flow as wind.

空氣分子流動就形成風

空氣流動~~
空氣流動會引致空氣粒子經過人的皮膚~~
空氣粒子會把你皮膚的熱帶走~~
令你各得涼快~~
而風扇的扇葉能推動空氣~~
形成風~~