xShadow zone : The shadow zone is the area of the earth from angular distances of 104 to 140 degrees from a given earthquake that does not receive any direct P waves. The shadow zone results from S waves being stopped entirely by the liquid core and P waves being b
As greenhouse gases build up in the atmosphere, more of the energy that gets to Earth from the Sun sticks around the planet. This means that the amount of energy coming to Earth is greater than the amount...Read more