Most natural earthquakes in the upper part of the Earth’s crust are caused by elastic rebound, according to geologists. What do those geologists mean when they say this? Group of answer choices Rocks moving in opposite directions on opposite sides of a fault get stuck for a while and bend, then “snap back” when something breaks along the fault. Rocks compressed by volcanic eruptions “bounce back”, shaking their surroundings. All rocks on a continent move in the same direction at the same speed, even if there is a fault splitting the continent. High-pressure water in faults allows the rocks on opposite sides of a fault to move smoothly in opposite directions all the time, carrying halves of houses built on the faults in opposite directions and so slowly tearing the houses in half. Rocks stretched by explosion of subducted slabs then “bounce back”, shaking their surroundings.