Description: The Air at the equator is hot and the air at the poles is cold, when warm air rises cold air rushed in to fill the empty spaces. We call this wind. In Ontario our prevailing winds come from the WEST.!!!
Air masses: Large body of air, Warm masses from the equator, Cold Masses from the poles , Air masses that come over water tend to be warmer and wetter. When cold and warm air masses meet, The warm air is forced up and the air rushes in to fill the space, the warm cool, condense and precipitate. The rotation of the earth causes air masses to spin. Because the equator is moving faster than any other part of the planet. If air is moving North away from the equator it will veer to the east because it is travelling faster than the earth is beneath it. So hurricanes and storm systems in the Northern Hemisphere usually spins counter clockwise.
