Seismic Waves

Q. The point inside earth's surface where an earthquake begins is known as:

1. Fault point
2. Crack point
3. Focus point
4. None of these

Q. Choose the correct statement:

1. Seismic waves travel faster through less dense material.
2. Seismic waves travel at one speed regardless of the density of the material.
3. It is not possible to record the speed of seismic waves.
4. Seismic waves travel faster through more dense material.

Q. What do we use to record seismic waves?

1. Seismometer
2. Seisomograph
3. Seismonomer
4. Seismoscope

Q. What are seismic waves caused by?

1. Traffic
2. Volcanoes
3. Earthquakes
4. Thunder