Geology, Seismology Objective Test
Geology Sample Paper
Q.1: The origin place of an earthquake is known as:
a) Focus
b) Epicenter
c) Mesoseismal
d) Antic enter
ANSWER: (a)
Q.2: The angle subtended at the center of the earth by the arc between the source and the
Receiver is known, as:
a) Seismic angle.
b) Epicentral angle.
c) Epicentral distance.
d) Mesoseismal angle.
ANSWER: (c)
Q.3: Antic enters is:
a) The point vertically above the focus on the surface
b) The point vertically down the focus in the core.
c) The point located at 90° form the epicenter.
d) The point located at opposite side of the epicenter on the earth's surface.
ANSWER: (d)
Q.4: Line joins the points of same intensity is called:
a) Mesoseismal line.
b) Teleseismal line.
c) lsoseismal line.
d) Epicentral line.
ANSWER: (c)
Q.5 : Logarithm of the maximum amplitude on a seismogram written by on instrument or
Specified standard type at a ‘distance of 100km fond the epicenter is known as:
a) Intensity.
b) Magnitude.
c) Seismograph.
d) Seismogram.
ANSWER: (b)
Q. 6: Foreshocks caused by:
a) l initial stresses in the rock material.
b) lncipient rupture in the strained and cracked material along the fault.
c) Very high frictional force.
d) Incomplete fault plane.
ANSWER: (b)
Q.7: A zero magnitude earthquake is a finite size earthquake which will write a record on
a standard wood-Anderson seismograph at a distance of 100 km. :
a) One micron.
b) Ten micron.
c) Hundred micron.
d) Thousand micron.
ANSWER: (a)
Q. 8: The total signal duration in seconds from the onset time until the amplitude merges
in the background noise level is called:
a) Amplitude noise.
b) Event.
c) Seismic moment.
d) Coda length.
ANSWER: (d)
Q.9: “Elastic rebound theory" is related to:
a) Earthquake.
b) Volcanoes.
c) Plate tectonics.
d) Continental drifts.
ANSWER: (a)
Q. 10: Match time following:
I ll
1. Focus i. Origin point of earthquake.
2. Epicenter. ii. Point on the surface above focus.
3. lsoseismal lines. iii. Some earthquake intensity lines.
4. Homoseismals. iv. Some arrival time of shocks.
a)1-i,2-ii,3-iii,4-iv.
b)1-ii,2-i,3-iv,4-iii.
c)1-ii,2-i,3-iii 4-iv.
d)1-1,2-ll,3-iv’,4-iii.
ANSWER: (a)
Q. 11 : St- Waves and P - Waves are having :
a). Short wavelength and high frequency.
b) Short wavelength and low frequency.
c) Long wavelength and high frequency.
d) Long wavelength and low frequency.
ANSWER: (a)
Q. 12: Seismic waves in which the particles vibrate at right angles to the direction of
probation is called on:
a) P - Waves:
b) S - Waves.
c) L - Waves.
d) Love Waves.
ANSWER: (b)
Q. 13: Waves in which the particles motion is retrograde elliptical in a direction of vertical
plane through the propagation are:
a) P - Waves.
b) S - Waves.
c) Lover waves.
d) Ray Leigh waves.
ANSWER: (d)
Q. 14: Magnitude - 8 earthquake on‘-Richter- scale will be how many times larger than a
magnitude-7 earthquake:
a) 5 times.
b) 10 times.
c) 100 times.
d) 150 times.
ANSWER: (b)
Q. 15: The earthquakes which are generally occurred are of:
a) Shallow type.
b) Intermediate type.
c) Deep seated type.
d) None of these
ANSWER: (a)
Q.16 : Match the following :
I ll
1. P - Waves i. lnstrument for recording of seismic
shocks.
2. S - Waves ii. Sound waves.
3. Seismograph. iii. Light waves.
4. Seismogram iv. Record of seismic shocks.
a)1-i,2-ii,3-iii,4-iv.
b)1-iv,2-iii,3-iv,4-i.
c)1-iii,2-ii,3-i,4-iv.
d)1-ii,2-iii,3-i,4-iv.
ANSWER: (c)
Q. 17: The angle at which earthquake waves meet the horizontal plane is called:
a) Angle of repose.
b) Angle of emergence.
c) Angle of interference.
d) None of these.
ANSWER: (b)
Q. 18 : The acceleration produced due to catastrophic shock is :
a) Over 250 cm/sec/sec.
b) Over 500 cm/sec/sec.
c) Over 750 cm/sec/sec.
d) Over 980 cm/sec/sec.
ANSWER: (d)
Q. 19 : A large wave of oscillation set up in an enclosed basin, by the motion of an
earthquake is known as :
a) Serif.
b) Rip current.
c) Steichen.
d) lsograde.
ANSWER: (c)
Q. 20: P - waves are also known as:
a) Longitudinal waves.
b) Compressional waves.
c) Push - Pull waves.
d) All the/above.
ANSWER: (d)
Q. 21: The speed of P - waves depend on the:
a) Density only.
b) Elastic parameters only.
c) Density and elastic parameters both.
d) Density and specific gravity.
ANSWER: (c)
Q. 22: The order of arrival of various phases on a seismogram is:
a) P, LQ, S and LR.
b) P, S, LR and LQ.
c) P, LR, LQ and S.
d) P, S, LQ and LR.
ANSWER: (d)
Q. 23: The surface waves are generated:
a) At the focus.
b) At the epicenter.
c) When body waves strike any discontinuity.
d) When P-waves and S-wave collide.
ANSWER: (c)
Q. 24 : Shadow zone lies between :
a) 90° and 110°
b) 100° and 120°
c) 105° and 142°
d) 101° and 155°
ANSWER: (c)
Q. 25: Wadati diagram is useful to find out:
a) Velocity of the seismic waves.
b) Origin time of an earthquake.
c) The arrival time of the seismic waves.
d) The epicentral distance.
ANSWER: (b)
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