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www.merriam-webster.com/dictionary/earthquake

Earthquake definition is - a shaking or trembling of the earth that is volcanic or tectonic in origin. How to use earthquake in a sentence.

www.thefreedictionary.com/earthquake

Define earthquake. earthquake synonyms, earthquake pronunciation, earthquake translation, English dictionary definition of earthquake. n. A sudden movement of the earth's crust caused by the release of stress accumulated along geologic faults or by volcanic activity. Also called seism ,...

www.britannica.com/science/earthquake-geology

Earthquake: Earthquake, any sudden shaking of the ground caused by the passage of seismic waves through Earth’s rocks. Earthquakes occur most often along geologic faults, narrow zones where rock masses move in relation to one another. Learn more about the causes and effects of earthquakes in this article.

en.wikipedia.org/wiki/Earthquake

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.

www.dictionary.com/browse/earthquake

Earthquake definition, a series of vibrations induced in the earth's crust by the abrupt rupture and rebound of rocks in which elastic strain has been slowly accumulating. See more.

study.com/academy/lesson/what-is-an-earthquake-definition-history.html

Earthquakes are well known for the damage and destruction they leave behind. But what is an earthquake? In this video lesson you will learn about...

www.collinsdictionary.com/dictionary/english/earthquake

Earthquake definition: An earthquake is a shaking of the ground caused by movement of the Earth's crust. | Meaning, pronunciation, translations and examples

simple.wikipedia.org/wiki/Earthquake

Most earthquakes form part of a sequence, related to each other in terms of location and time. Most earthquake clusters consist of small tremors which cause little to no damage, but there is a theory that earthquakes can recur in a regular pattern. A foreshock is an earthquake that occurs before a larger earthquake, called the mainshock.

earthquake.usgs.gov/learn/kids/eqscience.php

The Science of Earthquakes. Originally written by Lisa Wald for “The Green Frog News” What is an earthquake? An earthquake is what happens when two blocks of the earth suddenly slip past one another. The surface where they slip is called the fault or fault plane.

www.yourdictionary.com/earthquake

earthquake definition: The definition of an earthquake is the release of sudden and extreme energy that is caused by shifting in the Earth's crust. Facts About Earthquakes A seismometer is used to record and measure the strength of an earthquake. ...