What makes the wind blow and why does it blow?

Wind is a consequence of different areas of the earth being heated differently by the sun (differential heating) This difference in heating creates differences in air pressure in different places. In some places the atmospheric pressure is higher and in other places it's lower (pressure gradient). The air begins to move from areas of high pressure toward places with lower pressure in a futile effort to balance out the differences in pressure. The movement of this air is called wind. The stronger the pressure differences..the stronger the wind speed.

Yes, pressure differences are the answer, and they are indeed caused by heat, but the heat often comes to the air from the land or the oceans, not directly from the sun, and the wind does not blow directly from the high pressure zone to the low pressure one, but it follows a circular route caused by the rotation of the earth, so it actually spirals in to low pressure areas and away from high pressure areas. You can see it on meteorological weather maps which show lines of equal pressure, isobars, with the wind spiraling anticlockwise around low pressure zones in the northern hemisphere and clockwise around high pressure zones, again in the northern hemisphere. They are the opposite in the southern hemisphere. The weather fronts on the weather map are shown by lines of little blue triangles or little red semicircles signifying the cold fronts and the warm fronts, but they point in the direction of the wind, so you can easily check how the winds are blowing by looking where the fronts are pointing.

Areas of high and low pressure are formed by uneven heating of the earth's surface by the sun. Wind is the movement of air from areas of high pressure, to areas of low pressure. Here is a link that will go more in depth: http://www.theweatherprediction.com/kid_weather_questions/wind.html

Its is mainly caused by pressure. If the pressure is higher at point "A" and lower at point "B" The air will naturally try to move to point "B". i.e. wind !

Yes, pressure differences are the answer, and they are indeed caused by heat, but the heat often comes to the air from the land or the oceans, not directly from the sun, and the wind does not blow directly from the high pressure zone to the low pressure one, but it follows a circular route caused by the rotation of the earth, so it actually spirals in to low pressure areas and away from high pressure areas. You can see it on meteorological weather maps which show lines of equal pressure, isobars, with the wind spiraling anticlockwise around low pressure zones in the northern hemisphere and clockwise around high pressure zones, again in the northern hemisphere. They are the opposite in the southern hemisphere. The weather fronts on the weather map are shown by lines of little blue triangles or little red semicircles signifying the cold fronts and the warm fronts, but they point in the direction of the wind, so you can easily check how the winds are blowing by looking where the fronts are pointing.

Areas of high and low pressure are formed by uneven heating of the earth's surface by the sun. Wind is the movement of air from areas of high pressure, to areas of low pressure. Here is a link that will go more in depth: http://www.theweatherprediction.com/kid_weather_questions/wind.html

Its is mainly caused by pressure. If the pressure is higher at point "A" and lower at point "B" The air will naturally try to move to point "B". i.e. wind !