Weather Weather is the unification of conditions like sun, clouds, rain, wind, humidity, heat, and cold in a certain area and point in time. Weather is caused by the constant shaking of the lowest layer of our atmosphere, called the troposphere. The sun's energy warms the basic needs of our environment. This uneven heating makes the air warmer, low-pressure equatorial air rise and move plowed and the high-pressure polar air sink and move towards the …showed first 75 words of 5581 total…

…showed last 75 words of 5581 total…on the type of rock. It may average about 2 miles per second in granite or other strong rock. At that rate, a fracture may spread more than 350 miles in one direction in less than three minutes. As the fracture extends along the fault, blocks of rock on one side of the fault may drop down below the rock on the other side, move up and over the other side, or slide forward past the other.