3) Explain earthquake sudden vibrations on the earth and shaking of Earth's surface is CALLED an earthquake these causes seismic waves leading to movement of the Earth surface like tremorse shaking or it goes up down. the socks and waves formed in interior of the earth spreads on the surface in all directions. the central point of earthquake is the point above the epicenter on the earth surface. strong convulse aur waves at first occurs near to that area. 2)explain lightning SAFETY a lightning strike or lightning bolt is an electric discharge between the atmosphere and the GROUND the mostly originate in a Cumulonimb could and terminate on the ground, called cloud to ground lightning 1) the story of lightning lightning occurs due to bright during a thousand storm the air currents move upward while the water droplets move downwards process of electric discharge between different clouds or between clouds and Earth cause lightningsorry other two I don't have PLEASE mark my answer as brainliest