ROCKS AND MOUNTAINS MCQS SET 06

ROCKS AND MOUNTAINS MCQS SET 06

1. Earthquakes occur frequently in :
(a) Eastern coast of Asia
(b) Islands of South East Pacific Ocean
(c) Western coast of America
(d) all of the above areas
Ans: (d)
2. The epicentre of an earthquake is the:
(a) point where P-waves touch the surface
(b) nearest point to the surface from the focus perpendicular to the earth's surface
(c) point of intersection of P and S wave fronts
(d) antipodal point
Ans: (b)

3. Japan experiences frequent earth- quakes because it is located :
(a) on the eastern coast of Asia
(b) on the meeting point of two plates of the earth's crust
(c) amidst the ocean
(d) in the volcanic belt
Ans: (b)

4. Which of the following belts are associated with seismic activity?
1. Circum-Pacific Belt
2. Circum-Atlantic Belt
3. Mid-Continental Belt
4. Mid-Atlantic Belt
(a) 1, 2 and 4
(b) 1, 3 and 4
(c) 1, 2 and 3
(d) 2, 3 and 4
Ans: (b)
5. Earthquakes occur due to:
(a) frequent occurrence of cyclones
(b) movement of plates of earth, which float on the hot volcanic mantle below the earth's surface
(c) too much pressure on land
(d) underground nuclear explosions
Ans: (b)

6. The movement inside the Earth's crust is studied by:
(a) Geodesy
(b) Geology
(c) Plate Tectonics
(d) Seismology
Ans: (d)
7. Tsunami is a large sea wave caused by an earthquake experienced along the coasts of:
(a) India
(b) China
(c) Australia
(d) Japan
Ans: (d)
8. The intensity of earthquakes is measured on :
(a) Beaufort scale
(b) Richter scale
(c) Secant scale
(d) Mercalli scale
Ans: (b)

9. The transverse, longitudinal and surface waves in an earthquake originate from:
(a) the focus within the body of the earth
(b) the focus on the surface of the earth
(c) the epicentre on the surface of the earth
(d) the epicentre within the body of the earth
Ans: (a)

10. Earthquakes rarely occur in:
(a) Alaska
(b) Brazil
(c) Mexico
(d) New Zealand
Ans: (b)