Some areas of the earth absorb the sun s energy. Dark forest areas do this just like dark clothes absorb the sun s heat. Icy areas reflect the sun s heat back into space and little heat remains in the surrounding air. The differences between these warmer and cooler areas cause air to move at different speeds since heat causes molecules to move more quickly. The oceans are fairly stable in temperature.
Land has many temperature changes.
All of these are factors in creating winds that move the air, the atmosphere, around the earth, creating weather. Wind moves from high to lower pressure areas. The amount of air pressure is what creates wind speed or force. After a harsh and windy storm, there is often a day of wind. The wind seems to clean out the storm.