what is earthquake
and how can we measure it
Answers
Answer:
An earthquake is the shaking of the surface of the Earth. Earthquakes can be extremely violent. They are caused by abnormal movements of the Earth's tectonic plates. ... The sudden release of tension in the tectonic plates sends waves of energy that travel through the Earth.
The Richter scale measures the magnitude of an earthquake (how powerful it is). It is measured using a machine called a seismometer which produces a seismograph. ... It is logarithmic which means, for example, that an earthquake measuring magnitude 5 is ten times more powerful than an earthquake measuring 4.
Answer:
An earthquake is the shaking of the surface of the Earth. Earthquakes can be extremely violent. They are caused by abnormal movements of the Earth's tectonic plates. ... The sudden release of tension in the tectonic plates sends waves of energy that travel through the Earth.
Explanation:
(CNN) Earthquakes are measured using seismographs, which monitor the seismic waves that travel through the Earth after an earthquake strikes. Scientists used the Richter Scale for many years but now largely follow the "moment magnitude scale," which the U.S. Geological Survey says is a more accurate measure of size.