Question

N. Answer the following briefly:
1. Define Earthquake
2. What is Seismograph? social
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Answer 1

Answer:

1)

• An earthquake is caused by a sudden slip on a fault. ... When the stress on the edge overcomes the friction, there is an earthquake that releases energy in waves that travel through the earth's crust and cause the shaking that we feel. In California there are two plates - the Pacific Plate and the North American Plate.

2)

• A seismometer is an instrument that responds to ground motions, such as caused by earthquakes, volcanic eruptions, and explosions. Seismometers are usually combined with a timing device and a recording device to form a seismograph.

Answer 2

Answer:

earthquake : violent movement of the earth’s surface

seismograph : an instrument that measures and records information about earthquakes