the shaking motion of an earthquake is the result of a sudden release of stress building up within rocks of the earth's crust. we are pretty broad and deep when it comes to talent. other questions are trick questions that are designed to catch some people off guard. not too big and not too small. 4. emergency situations where there is an increased risk of the tree falling on a home, or they have fallen on or near power lines. if the surface is damaged it will help protect against corrosion and bacteria build up. 