All Categories MCQs
Topic Notes: All Categories
General Description
Plato
- Biography: Ancient Greek philosopher (427–347 BCE), student of Socrates and teacher of Aristotle, founder of the Academy in Athens.
- Important Ideas:
- Theory of Forms
- Philosopher-King
- Ideal State
70441
Induced seismicity is primarily caused by:
Answer:
Human activities (e.g., mining, reservoir filling, wastewater injection)
Induced seismicity refers to tremors caused by human activity, such as fracking wastewater injection or building large dams.
70442
The 'Great Chilean Earthquake' of 1960 had a magnitude of:
Answer:
9.5
It remains the highest magnitude ever measured.
70443
A 'seismic gap' is:
Answer:
A segment of an active fault known to produce significant earthquakes that has not slipped in an unusually long time
Seismic gaps are considered likely locations for future earthquakes because stress has been accumulating there without release.
70444
The boundary between the Earth's crust and the mantle is called the:
Answer:
Mohorovicic Discontinuity (Moho)
The Moho marks the boundary between the crust and the mantle, defined by a distinct change in seismic wave velocity.
70445
Which wave type creates a 'rolling' motion on the surface?
Answer:
Rayleigh wave
Rayleigh waves move the ground up and down and side-to-side in the same direction that the wave is moving, creating a rolling motion similar to ocean waves.
70446
The 2005 Kashmir earthquake primarily affected:
Answer:
Pakistan and India
The 2005 earthquake centered in Pakistan-administered Kashmir and Khyber Pakhtunkhwa caused massive casualties in Pakistan and India.
70447
Base isolation is a technique used in engineering to:
Answer:
Protect buildings by decoupling them from ground shaking
Base isolation involves placing flexible bearings or pads between the building and its foundation to absorb seismic energy.
70448
The term 'intraplate earthquake' refers to an earthquake that occurs:
Answer:
In the interior of a tectonic plate
Intraplate earthquakes occur away from plate boundaries (e.g., New Madrid, USA; Gujarat, India), often due to reactivated ancient faults.
70449
In 2003, the ancient city of Bam was largely destroyed by an earthquake in:
Answer:
Iran
The 2003 Bam earthquake in southeastern Iran destroyed the ancient Citadel of Bam and killed over 26,000 people.
70450
The Valdivia Earthquake (1960) and the Tohoku Earthquake (2011) were both:
Answer:
Subduction zone megathrust earthquakes
Both were massive megathrust earthquakes occurring at subduction zones, generating massive tsunamis.