Webster Dictionary(0.00 / 0 votes)Rate this definition: 1  Sin. old form of Since. 2  Sin(noun) transgression of the law of God; disobedience of the divine command; any violation of God's will, either in purpose or conduct; moral deficiency in the character; iniquity; as, sins of omission and sins of commission.
An earthquake (also known as a quake, tremor or temblor) is the shaking of the surface of the Earth, resulting from the sudden release of energy in the Earth's lithosphere that creates seismic waves. Earthquakes can range in size from those that are so weak that they cannot be felt to those violent enough to toss people around and destroy whole cities.
What is an earthquake? This can be something of a confusing question, because the answer can be either one of two directly related phenomena, and both involve movements in the Earth's crust. An earthquake is the ground motion you experience when a part of the Earth's crust shifts along a surface, a sort of fracture in the crust, known as a fault. This shift produces vibrations in the rocks and soil beneath us.