Physics
Grade-8
Easy
Question
Seismic waves cause the earth’s surface to shake. These are ____.
- Not mechanical waves
- Mechanical waves
- Sometimes mechanical
- None of the above
Hint:
Seismic waves are mechanical waves that cause the earth's surface to shake.
The correct answer is: Mechanical waves
- Sudden movement of materials within the earth causes seismic waves.
- It is a mechanical wave that is caused due to earthquakes, volcanic eruptions, landslides, explosions etc.
- The study of seismic waves is called seismology and they are recorded with the help of seismometer or accelerometers.
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