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how are earthquakes dectected?

Sagot :

Answer:  Earthquakes are measured using instruments called seismometers, that detect the vibrations caused by seismic waves as they travel through the crust. Seismic waves can be both natural (from earthquakes) or caused by human activity (explosions). ... As the ground vibrates, a zig-zag line is recorded.

Explanation:

Earthquakes are measured using instruments called seismometers. They detect the vibrations caused by seismic waves as they travel through the crust.