Answer;
Plates moving rocks
Breaking stress that decreases
Explanation;
- Earthquakes are a result of a process called plate tectonics. Plate tectonics is the area of science that explains why the surface of the Earth changes and how those changes cause earthquakes.
- Rocks usually change shape, or deform, over long periods of time. As they are strained, potential energy builds up in them.
- This energy is released suddenly by the action of rocks breaking and moving. Such breaking, and the movement that follows, causes vibrations that move through rock or other materials. If they are large enough, these vibrations are felt as Earthquakes.