Bill Nye explains that wind is caused by the heating and the cooling of the Earth. The Sun warms the air, causing it to move faster and spread out, and cold air pushes the warm air up. Wind comes from all different directions since it moves with the rotation of the Earth.
Bill Nye explains plate tectonics and the origination of its theory. The areas in which the tectonics spread apart is where volcanoes form. Conversely, the areas in which the tectonics come together is where mountains form.