Earth’s surface has a lot of cracks that divide it in pieces, known as tectonic plates. These plates cause earthquakes when they move when affected by changes in the Earth's inner layers, like lava flows. The plates will collide and rub on each other, applying huge forces and causing minor tremors. A stronger quake will be caused when the energy stored with the colision will be released. Earthquakes can be measured by a seismograph, which may be positioned in places with high odds of having tremors and draws peaks that vary with the intensity of the tremor. Stronger earthquakes imply on higher peaks, and these peaks may be measured numerically by Richter’s scale. You cannot predict when an earthquake will happen, but you may know where it will happen. Scientists look for areas with faults. Faults mean that a tremor once occurred there, and another may happen.
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