1|Page
GL101 Exam Preparation Newest Actual
Exam With Complete Questions And Correct
Detailed Answers 2026 (Verified Answers)
|Already Graded A+
Linear, magnetic patterns associated with mid-ocean ridges are configured
as ________.
A) concentric circles about a rising plume of hot, mantle magma
B) reversed magnetizations along the present day rift valleys and normal
magnetizations along the adjacent ridge
C) normal and reversed magnetized stripes roughly parallel to the ridge
D) normal and reversed magnetized stripes roughly perpendicular to the
ridge axis ......ANSWER.....C
What was the smallest Richter magnitude that can be felt by a human?
A) 0.5
B) 1.0
C) 2.0
D) 4.0 ......ANSWER.....C
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The ________ of the Earth does not transmit S waves.
A) outer mantle
B) inner crust
C) outer core
D) deep mantle ......ANSWER.....C
Which of the following foundation materials is most stable during
earthquake shaking?
A) bedrock
B) unconsolidated moist soil
C) water-saturated sand
D) sand and mud ......ANSWER.....A
The ________ transmits P waves but not S waves.
A) outer core
B) crust
C) mantle
D) lithosphere ......ANSWER.....A
,3|Page
What causes mud and sand volcanoes or geysers in a modern delta or low
tide beach setting?
A) gas venting from underlying hydrocarbon deposits
B) liquefaction, dewatering, and compaction of water saturated materials at
depth often caused by seismic shaking or loading changes
C) new volcanic activity boiling the water beneath the edge of the sea
D) meteorite impacts during solar flares ......ANSWER.....B
Which one of the following is true regarding tsunamis?
A) They travel as deep-water waves at speeds greater than the speed of
sound in water so they hit the coast followed by a massive rumble like a
sonic boom.
B) Their wave heights decrease and wavelengths increase as they move into
shallower water.
C) They are started by fault-induced, horizontal shifts in the sea floor that
suddenly propel great masses ofwater upwards like spreading ripples in all
directions.
D) They occur in the open ocean like fast surface waves travelling at
hundreds of kilometres per hour,wavelengths are hundreds of kilometres,
and wave heights < a metre. ......ANSWER.....D
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What acoustic phenomenon causes the shadow zone for P-wave arrivals at
epicentral angles between 100°and 140°?
A) attenuation
B) dispersion
C) reflection
D) refraction ......ANSWER.....C
What causes the shadow zone for no S-wave arrivals beyond epicentral
angles of 100°?
A) The Earth is hollow.
B) The liquid outer core will not pass shear waves, so any down-going shear
wave energy is converted to additional "late" P waves at the mantle-core
boundary.
C) All shear waves are converted to surface waves at the mantle-core
boundary.
D) All seismographs are located on the near side of the earth.
......ANSWER.....B
Why was building damage so extensive in the 1985 Mexico City quake?
A) The epicentre was right in the city.
GL101 Exam Preparation Newest Actual
Exam With Complete Questions And Correct
Detailed Answers 2026 (Verified Answers)
|Already Graded A+
Linear, magnetic patterns associated with mid-ocean ridges are configured
as ________.
A) concentric circles about a rising plume of hot, mantle magma
B) reversed magnetizations along the present day rift valleys and normal
magnetizations along the adjacent ridge
C) normal and reversed magnetized stripes roughly parallel to the ridge
D) normal and reversed magnetized stripes roughly perpendicular to the
ridge axis ......ANSWER.....C
What was the smallest Richter magnitude that can be felt by a human?
A) 0.5
B) 1.0
C) 2.0
D) 4.0 ......ANSWER.....C
,2|Page
The ________ of the Earth does not transmit S waves.
A) outer mantle
B) inner crust
C) outer core
D) deep mantle ......ANSWER.....C
Which of the following foundation materials is most stable during
earthquake shaking?
A) bedrock
B) unconsolidated moist soil
C) water-saturated sand
D) sand and mud ......ANSWER.....A
The ________ transmits P waves but not S waves.
A) outer core
B) crust
C) mantle
D) lithosphere ......ANSWER.....A
,3|Page
What causes mud and sand volcanoes or geysers in a modern delta or low
tide beach setting?
A) gas venting from underlying hydrocarbon deposits
B) liquefaction, dewatering, and compaction of water saturated materials at
depth often caused by seismic shaking or loading changes
C) new volcanic activity boiling the water beneath the edge of the sea
D) meteorite impacts during solar flares ......ANSWER.....B
Which one of the following is true regarding tsunamis?
A) They travel as deep-water waves at speeds greater than the speed of
sound in water so they hit the coast followed by a massive rumble like a
sonic boom.
B) Their wave heights decrease and wavelengths increase as they move into
shallower water.
C) They are started by fault-induced, horizontal shifts in the sea floor that
suddenly propel great masses ofwater upwards like spreading ripples in all
directions.
D) They occur in the open ocean like fast surface waves travelling at
hundreds of kilometres per hour,wavelengths are hundreds of kilometres,
and wave heights < a metre. ......ANSWER.....D
, 4|Page
What acoustic phenomenon causes the shadow zone for P-wave arrivals at
epicentral angles between 100°and 140°?
A) attenuation
B) dispersion
C) reflection
D) refraction ......ANSWER.....C
What causes the shadow zone for no S-wave arrivals beyond epicentral
angles of 100°?
A) The Earth is hollow.
B) The liquid outer core will not pass shear waves, so any down-going shear
wave energy is converted to additional "late" P waves at the mantle-core
boundary.
C) All shear waves are converted to surface waves at the mantle-core
boundary.
D) All seismographs are located on the near side of the earth.
......ANSWER.....B
Why was building damage so extensive in the 1985 Mexico City quake?
A) The epicentre was right in the city.
