The ground under our feet seems motionless and reliable, but, alas, it is not so. Continents and seas are located on huge tectonic plates, which diverge in some places and come closer in others. The plates move at a speed of only a few centimeters per year, but this process can cause terrible destruction. Shifts of tectonic plates are accompanied by earthquakes and volcanic eruptions. These natural disasters can cause fires and floods, which are even more destructive than their original cause. You will learn about various disasters from this book.