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CSS - PMS - CCE - PCS - Geography Practice

Earthquakes – Causes, Seismic Waves, Measurement & Global Distribution MCQs

Prepare earthquakes for CSS, PMS, CCE and PCS Geography, covering causes, faults, focus and epicentre, P and S waves, seismic instruments, magnitude and intensity scales, earthquake zones, hazards, tsunamis and disaster mitigation. Includes concepts relevant to Pakistan and major global seismic regions.

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Earthquakes – Causes, Seismic Waves, Measurement & Global Distribution

Earthquakes – Causes, Seismic Waves, Measurement & Global Distribution MCQs With Answers

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CSS - PMS - CCE - PCS - Geography Earthquakes
The absence of S waves through the outer core indicates it is:
A. Liquid
B. Solid
C. Gaseous
D. Vacuum
Correct Answer: A
S-wave shadowing is key evidence that the outer core is liquid.
CSS - PMS - CCE - PCS - Geography Earthquakes
S waves cannot travel through:
A. Liquids
B. Solids
C. Crustal rocks
D. Granite
Correct Answer: A
Liquids cannot sustain the shear stress required for S-wave propagation.
CSS - PMS - CCE - PCS - Geography Earthquakes
Which seismic waves travel fastest?
A. P waves
B. S waves
C. Love waves
D. Rayleigh waves
Correct Answer: A
P waves are the fastest seismic waves and arrive first.
CSS - PMS - CCE - PCS - Geography Earthquakes
S waves are:
A. Shear body waves
B. Compressional waves
C. Atmospheric waves
D. Tidal waves
Correct Answer: A
Secondary waves move material transverse to propagation.
CSS - PMS - CCE - PCS - Geography Earthquakes
P waves are:
A. Compressional body waves
B. Shear surface waves only
C. Water waves
D. Electromagnetic waves
Correct Answer: A
Primary waves alternately compress and dilate material.
CSS - PMS - CCE - PCS - Geography Earthquakes
The recorded trace of seismic motion is a:
A. Seismogram
B. Hyetograph
C. Climograph
D. Contour
Correct Answer: A
A seismogram is the time series produced by a seismic instrument.
CSS - PMS - CCE - PCS - Geography Earthquakes
The instrument that records ground motion is a:
A. Seismograph/seismometer
B. Barometer
C. Hygrometer
D. Anemometer
Correct Answer: A
Seismometers detect seismic ground motion; records are seismograms.
CSS - PMS - CCE - PCS - Geography Earthquakes
The epicenter is the point:
A. On Earth's surface directly above the focus
B. At Earth's center
C. Where P waves stop
D. At a volcano summit only
Correct Answer: A
Epicenter is the surface projection of the hypocenter.
CSS - PMS - CCE - PCS - Geography Earthquakes
The point inside Earth where rupture begins is the:
A. Focus (hypocenter)
B. Epicenter
C. Fault scarp
D. Seismogram
Correct Answer: A
The hypocenter is the subsurface origin of an earthquake.
CSS - PMS - CCE - PCS - Geography Earthquakes
An earthquake is caused by sudden release of:
A. Stored elastic strain energy
B. Solar heat only
C. River pressure
D. Atmospheric oxygen
Correct Answer: A
Rapid fault slip releases accumulated elastic strain as seismic waves.
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