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
70461
The New Madrid Seismic Zone, known for massive quakes in 1811-1812, is located in:
Answer:
The Central United States
The New Madrid Seismic Zone is a major seismic zone and a prolific source of intraplate earthquakes in the southern and midwestern United States.
70462
What is the minimum number of seismic stations needed to triangulate the epicenter of an earthquake?
Answer:
Three
Data from at least three seismographs is required to draw intersecting circles and pinpoint the epicenter (triangulation).
70463
The devastating 2008 Sichuan earthquake occurred in which country?
Answer:
China
The 2008 Wenchuan earthquake occurred in Sichuan province, China, causing massive destruction and loss of life.
70464
Which seismic waves cause the most damage to buildings?
Answer:
Surface waves (Love and Rayleigh)
Surface waves travel along the Earth's surface and generally have the largest amplitudes, causing the most destructive shaking.
70465
Smaller earthquakes that follow the main shock are called:
Answer:
Aftershocks
Aftershocks are smaller earthquakes that occur in the same area during the days to years following a larger event or 'main shock'.
70466
The 1755 earthquake that destroyed Lisbon, Portugal, also profoundly influenced:
Answer:
The Enlightenment philosophy
The Lisbon earthquake challenged religious explanations for natural disasters and heavily influenced Enlightenment thinkers like Voltaire and Kant.
70467
The magnitude 7.0 earthquake that devastated Haiti occurred in which year?
Answer:
2010
The catastrophic Haiti earthquake struck near Port-au-Prince on January 12, 2010.
70468
Which type of fault is characterized by horizontal movement where blocks slide past each other (e.g., San Andreas)?
Answer:
Strike-slip fault
In a strike-slip fault, the movement of the blocks is primarily horizontal (lateral) and parallel to the strike of the fault.
70469
The 1964 'Great Alaska Earthquake' occurred on which day, amplifying the tragedy?
Answer:
Good Friday
The 1964 earthquake is often called the 'Good Friday Earthquake' because it struck on March 27, which was Good Friday that year.
70470
Which instrument records the motion of the ground during an earthquake?
Answer:
Seismograph / Seismometer
A seismograph (or seismometer) detects and records ground motion caused by seismic waves.