2026/2027 Update | 100% Correct Latest (Graded A+)
Question 1
What type of energy is released during an earthquake?
Correct Answer
Seismic Waves
Question 2
What causes earthquakes?
Correct Answer
Rupture of rocks along a fault
Question 3
Epicentre
Correct Answer
Point on surface directly above the location (focus) of the earthquake
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,Question 4
Wave Ray
Correct Answer
The direction of the wave moving away from the focus of the earthquake
Question 5
Focus
Correct Answer
Point below the surface that the earthquake occurred, directly below the epicentre
Question 6
How are earthquakes measured
Correct Answer
Seismographs
Question 7
How are earthquakes compared
Correct Answer
Magnitudes
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,Question 8
Magnitude
Correct Answer
- Expressed as a number to one decimal place
- first developed by richter but we dont use the richter scale anymore
- Today it is measured using the moment magnitude scale (M)
- Its a log based scale so each level is 10x larger than the last. e.g M6.0 is 10x worse than an M5.0
Question 9
The (M) scale is determined by
Correct Answer
- The area ruptured along a fault
- The amount of movement along the fault
- The elasticity of the crust of the focus
- Type of rocks, how strong the crust is.
Question 10
Magnitude-Frequency Concept
Correct Answer
The greater the Magnitude, the lower the frequency meaning that M9.0 Earthquakes are much much more rare than
M2.0 which occur everyday.
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, Question 11
Strongest Earthquake to ever occur? When and Where?
Correct Answer
Chile 1960 M9.5
Question 12
Strongest earthquake in Canada? When and Where?
Correct Answer
BC 1949 M8.1
Question 13
How often do M9.0 Earthquakes occur?
Correct Answer
A few every century
Question 14
Modified Mercalli intensity scale
Correct Answer
- Qualitative scale based on damage to structures and affect on people
- Categorized on a scale from I to XII
- I= Felt by few people
- XII= Damage is total, waves are seen on the surface, lines of sight distorted, objects are thrown in the air.
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