Earthquake Mcfadden Core 1
(59).webp "Earthquake Mcfadden Core 1 - Quiz")
Questions and Answers
- 1.
When stress causes rocks to break: vibrations called _____________________ are produced.
- A.
Earthquakes
- B.
Tsunami
- C.
Faults
- D.
Elastic Limit
Correct Answer
A. EarthquakesExplanation
When stress causes rocks to break, the release of energy creates vibrations known as earthquakes. These vibrations can travel through the Earth's crust, causing the ground to shake. Earthquakes can occur along fault lines, where tectonic plates interact and cause rocks to fracture and slip. The energy released during an earthquake can have destructive effects on the surrounding area, leading to damage and potential hazards such as landslides and tsunamis.Rate this question:
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- 2.
When tension forces pull rock apart a ________________ occurs.
- A.
Reverse Fault
- B.
Normal Fault
- C.
Strike-slip Fault
- D.
Transform Fault
Correct Answer
B. Normal FaultExplanation
When tension forces pull rock apart, a normal fault occurs. In a normal fault, the hanging wall moves downward relative to the footwall. This type of faulting is common in areas where the Earth's crust is being stretched or pulled apart, such as along divergent plate boundaries or in rift zones. The tension forces cause the rock to break and slide along the fault plane, resulting in the hanging wall moving down and the footwall moving up.Rate this question:
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- 3.
_______________________ waves cause particles in rocks to move at right angles to the direction of the waves.
- A.
Surface Waves
- B.
Primary Waves
- C.
Secondary Waves
- D.
Tertiary Waves
Correct Answer
C. Secondary WavesExplanation
Secondary waves, also known as shear waves, are a type of seismic wave that causes particles in rocks to move at right angles to the direction of the waves. Unlike primary waves (P-waves) that cause particles to move in the same direction as the wave, secondary waves move in a perpendicular motion. These waves are slower than primary waves and can only travel through solids, making them useful in determining the internal structure of the Earth during seismic studies.Rate this question:
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- 4.
The ___________ of an earthquake is the point of Earth's surface above the focus.
- A.
Focus
- B.
Epicenter
- C.
Foci
- D.
Fault
Correct Answer
B. EpicenterExplanation
The epicenter of an earthquake refers to the point on the Earth's surface directly above the focus, which is the actual location where the earthquake originates underground. When an earthquake occurs, seismic waves radiate out from the focus and reach the surface at the epicenter. Therefore, the epicenter is the location that experiences the strongest shaking and is usually used to determine the earthquake's location and magnitude.Rate this question:
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- 5.
The measure of energy released by an earthquake is the earthquake's ________________________
- A.
Magnitude
- B.
Destructive Force
- C.
Focus
- D.
Epicenter
Correct Answer
A. MagnitudeExplanation
The measure of energy released by an earthquake is known as its magnitude. Magnitude is a quantitative measurement that represents the amplitude of seismic waves produced by an earthquake. It is determined using seismic data collected from seismographs. The magnitude scale is logarithmic, meaning that each whole number increase on the scale represents a tenfold increase in the amplitude of the seismic waves and approximately 31.6 times more energy released. Therefore, magnitude provides a standardized way to compare the strength and energy release of different earthquakes.Rate this question:
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- 6.
At a _____________________, the rocks above the fault surface are forced up and over the rocks below the fault surface.
- A.
Reverse Fault
- B.
Normal Fault
- C.
Strike-Slip Fault
- D.
Transform Fault
Correct Answer
A. Reverse FaultExplanation
A reverse fault occurs when the rocks above the fault surface are pushed up and over the rocks below the fault surface. This type of fault is characterized by compression forces, where the crust is being squeezed together. The hanging wall moves upward relative to the footwall, creating a steeply inclined fault plane. Reverse faults are commonly found in areas where tectonic plates are colliding, such as convergent plate boundaries.Rate this question:
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- 7.
The _____________________ of an earthquake is the point in the Earth's interior where energy is released.
- A.
Epicenter
- B.
Fault
- C.
Focus
- D.
Strike-slip
Correct Answer
C. FocusExplanation
The focus of an earthquake refers to the point within the Earth's interior where the energy is released. It is the actual location where the seismic waves originate and spread outwards, causing the ground shaking and other associated effects. The epicenter, on the other hand, is the point on the Earth's surface directly above the focus. The fault refers to the fracture or break in the Earth's crust along which movement occurs during an earthquake. Strike-slip is a type of fault movement where the rocks on either side of the fault move horizontally past each other.Rate this question:
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- 8.
By studying seismic wave information, a sceintist discovered that boundary between Earth's crust and its upper mantle, which is call the ______________.
- A.
Moho
- B.
Lithosphere
- C.
Asthenosphere
- D.
Crust
Correct Answer
A. MohoExplanation
The correct answer is Moho. The Moho, also known as the Mohorovičić discontinuity, is the boundary between Earth's crust and its upper mantle. It was named after the Croatian seismologist Andrija Mohorovičić, who first discovered it in 1909. The Moho is characterized by a significant increase in seismic wave velocity, indicating a change in composition and density between the crust and mantle. This discovery revolutionized our understanding of the Earth's structure and has been instrumental in the field of seismology.Rate this question:
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- 9.
A ___________________ is a siesmic seawave that can cause great devestation.
- A.
P-waves
- B.
S-waves
- C.
Surface Waves
- D.
Tsunami
Correct Answer
D. TsunamiExplanation
A tsunami is a seismic seawave that can cause great devastation. Tsunamis are typically triggered by underwater earthquakes, volcanic eruptions, or landslides, and they can travel across the ocean at high speeds, reaching coastal areas with tremendous force. These waves can cause widespread flooding, destruction of infrastructure, and loss of life. Tsunamis are considered one of the most destructive natural disasters due to their ability to cause significant damage over large areas.Rate this question:
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- 10.
Most destruction is caused by __________________ waves
- A.
S-waves
- B.
Surface Waves
- C.
P-waves
- D.
Sound Waves
Correct Answer
B. Surface WavesExplanation
Surface waves are the correct answer because they are responsible for causing the most destruction during earthquakes. These waves travel along the Earth's surface and have a side-to-side motion, which causes buildings and infrastructure to shake violently. Surface waves are slower than other types of seismic waves, but they have a larger amplitude and longer duration, resulting in more damage. They can also cause landslides, soil liquefaction, and tsunamis, making them the most destructive type of seismic waves.Rate this question:
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- 11.
An instrument called a _____________________ is used to record seismic waves
- A.
Seismograph
- B.
Seismogram
- C.
Seismometer
Correct Answer
A. SeismographExplanation
A seismograph is an instrument that is used to record seismic waves. It consists of a sensitive detector, such as a pendulum or a mass on a spring, which is attached to a recording device. When seismic waves pass through the Earth's surface, they cause the detector to vibrate, and these vibrations are recorded on a seismogram. The seismograph is an essential tool in studying earthquakes and understanding the Earth's interior structure. It helps scientists analyze the intensity, duration, and frequency of seismic waves, providing valuable information about the location and magnitude of earthquakes.Rate this question:
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- 12.
A fault between two plates that are moving sideways past each other is called a _______________ fault
- A.
Normal
- B.
Reverse
- C.
Transform
- D.
Strike-slip
Correct Answer
D. Strike-slipExplanation
A fault between two plates that are moving sideways past each other is called a strike-slip fault. In this type of fault, the rocks on either side of the fault move horizontally in opposite directions, causing a shearing motion. This is different from normal and reverse faults, where the rocks move vertically. Transform faults are a specific type of strike-slip fault that occur at the boundaries between tectonic plates.Rate this question:
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- 13.
________________ waves cause particles to move back and forth in the same direction as the wave travels
- A.
Secondary
- B.
Light
- C.
Surface
- D.
Primary
Correct Answer
D. PrimaryExplanation
Primary waves, also known as P-waves, are a type of seismic wave that causes particles to move back and forth in the same direction as the wave travels. These waves are the fastest seismic waves and can travel through solids, liquids, and gases. P-waves are the first waves to be detected during an earthquake and are responsible for the initial shaking felt by people. They are able to travel through the Earth's interior and are characterized by their compressional motion, where particles are pushed together and pulled apart in the same direction as the wave.Rate this question:
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- 14.
Earthquakes generate energy waves called ____________________.
- A.
Seismic Waves
- B.
Ocean Waves
- C.
Sound Waves
- D.
Light Waves
Correct Answer
A. Seismic WavesExplanation
Earthquakes generate energy waves called seismic waves. These waves are produced when there is a release of energy in the Earth's crust, causing the ground to shake. Seismic waves travel through the Earth and can be detected and measured by seismographs. They are responsible for the destruction and damage caused by earthquakes, as they can cause buildings and structures to collapse. Seismic waves come in different types, including primary waves (P-waves) and secondary waves (S-waves), which travel at different speeds and have different effects on the Earth's surface.Rate this question:
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- 15.
When the force on rocks is great enough, they break, producing vibrations called _____________.
- A.
Faults
- B.
Earthquakes
- C.
Strains
- D.
Stresses
Correct Answer
B. EarthquakesExplanation
When rocks experience a significant amount of force, they reach a breaking point and fracture. This fracture causes vibrations known as earthquakes. Faults, strains, and stresses are all related to the forces acting on rocks, but they are not the direct result of rocks breaking and producing vibrations.Rate this question:
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- 16.
Once the elastic limit of rocks is passed, they break and move along surfaces called _______________.
- A.
Faults
- B.
Earthquakes
- C.
Strains
- D.
Stresses
Correct Answer
A. FaultsExplanation
When rocks are subjected to stress beyond their elastic limit, they break and move along surfaces called faults. Faults are fractures or cracks in the Earth's crust where movement has occurred. This movement can result in earthquakes as the rocks on either side of the fault slip past each other. Strains refer to the deformation of rocks under stress, while stresses are the forces that act on rocks.Rate this question:
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- 17.
The height of the lines traced on paper is a measure of the energy released or the ___________ of the earthquake.
- A.
Stress
- B.
Strain
- C.
Magnitude
- D.
Intensity
Correct Answer
C. MagnitudeExplanation
The height of the lines traced on paper is a measure of the energy released or the magnitude of the earthquake. Magnitude refers to the amount of energy released by an earthquake at its source. It is typically measured using a seismograph, which records the amplitude (height) of the seismic waves generated by the earthquake. The greater the magnitude, the more energy is released and the stronger the earthquake.Rate this question:
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- 18.
Most earchquakes happen ____________.
- A.
Without warning
- B.
In areas where earthquakes have occurred in the past
- C.
Along plate boundaries
- D.
All the answers provided are correct
Correct Answer
D. All the answers provided are correctExplanation
All the answers provided are correct because earthquakes can occur without warning, in areas where they have occurred in the past, and along plate boundaries. Earthquakes can happen suddenly and without any prior indication, making them unpredictable. They also tend to occur in regions where seismic activity has been observed historically. Additionally, earthquakes commonly happen along plate boundaries where tectonic plates interact, causing stress and resulting in seismic activity. Therefore, all of the given answers accurately describe the occurrence of earthquakes.Rate this question:
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- 19.
A person twice as far from the epicenter of an earthquake as another person will notice that the time between the arrival of the primary and secondary waves will be ________________.
- A.
The same
- B.
Larger
- C.
Reduced
- D.
Unnoticeable
Correct Answer
B. LargerExplanation
When an earthquake occurs, it generates primary and secondary waves that travel through the Earth's layers. The primary waves, or P-waves, are the fastest and arrive at a location before the secondary waves, or S-waves. The speed of these waves is constant, but the distance they need to travel varies depending on the location. In this scenario, if one person is twice as far from the epicenter as another person, it means that the first person is at a greater distance from the earthquake source. As a result, the first person will experience a larger time gap between the arrival of the P-waves and S-waves compared to the second person. Therefore, the correct answer is "Larger."Rate this question:
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- 20.
Scientists discovered changes in Earth's interior by studying___________.
- A.
Tsunamis
- B.
Tides
- C.
Changes in seismic waves
- D.
All of the answers provided are correct
Correct Answer
C. Changes in seismic wavesExplanation
Scientists discovered changes in Earth's interior by studying changes in seismic waves. Seismic waves are generated by earthquakes and other sources of energy, and they travel through the Earth's interior. By analyzing the properties of these waves, scientists can gain insights into the composition, structure, and dynamics of the Earth's interior, including the presence of different layers, the movement of tectonic plates, and the occurrence of geological processes such as volcanic activity. Therefore, changes in seismic waves provide valuable information about the Earth's interior and help scientists understand its behavior and evolution.Rate this question:
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- 21.
____________ is the force that squeezes rocks together.
- A.
Tension
- B.
Shear
- C.
Elastic Limit
- D.
Compression
Correct Answer
D. CompressionExplanation
Compression is the force that squeezes rocks together. When rocks are subjected to compression, they are pushed together, resulting in a decrease in their volume. This force is commonly associated with tectonic plate movements, where rocks are compressed and folded, leading to the formation of mountains and other geological features. Compression is also responsible for the creation of faults and earthquakes when the stress exceeds the strength of the rocks, causing them to fracture and slide past each other.Rate this question:
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- 22.
____________ is the force that pulls rocks apart.
- A.
Tension
- B.
Shear
- C.
Elastic Limit
- D.
Compression
Correct Answer
A. TensionExplanation
Tension is the force that pulls rocks apart. When rocks are subjected to tension, they experience a stretching or elongating force that causes them to separate or break apart. This force is commonly associated with processes such as faulting, where the Earth's crust is pulled apart along a fault line. Tension can also occur in other situations, such as when a rope or cable is pulled taut. In these cases, the force of tension is responsible for the separation or stretching of the material.Rate this question:
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- 23.
____________ is the force that causes plates to move sideways past each other.
- A.
Tension
- B.
Shear
- C.
Elastic Limit
- D.
Compression
Correct Answer
B. ShearExplanation
Shear is the force that causes plates to move sideways past each other. When two tectonic plates slide horizontally past each other, shear stress is generated along the boundary where they meet. This stress causes the plates to deform and eventually slip, resulting in earthquakes. Shear forces are responsible for the lateral movement and displacement of rocks and crustal materials along faults.Rate this question:
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- 24.
______________ faults are caused by tensional forces.
- A.
Normal
- B.
Strike-Slip
- C.
Reverse
- D.
Elastic
Correct Answer
A. NormalExplanation
Normal faults are caused by tensional forces. In these faults, the hanging wall moves downward relative to the footwall due to the pulling apart of the Earth's crust. This type of faulting is commonly associated with divergent plate boundaries, where two plates are moving away from each other. As the tensional forces act, the crust becomes stretched and eventually fractures, resulting in the formation of a normal fault. This faulting mechanism is responsible for the formation of rift valleys and the uplift of mountain ranges in certain geological settings.Rate this question:
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- 25.
______________ faults are caused by compressional forces.
- A.
Normal
- B.
Strike-Slip
- C.
Reverse
- D.
Elastic
Correct Answer
C. ReverseExplanation
Reverse faults are caused by compressional forces. In a reverse fault, the hanging wall moves upward relative to the footwall, resulting in a steeply inclined fault plane. This type of fault is commonly associated with convergent plate boundaries, where two tectonic plates collide and the compression forces cause the rocks to deform and uplift. Reverse faults are characterized by thrusting or shortening of the crust and are often associated with mountain-building processes.Rate this question:
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- 26.
______________ faults are caused by shear forces.
- A.
Normal
- B.
Strike-Slip
- C.
Reverse
- D.
Elastic
Correct Answer
B. Strike-SlipExplanation
Strike-Slip faults are caused by shear forces. In this type of fault, the rocks on either side of the fault move horizontally past each other. The movement is parallel to the fault line, with one side moving to the left and the other side moving to the right. This type of fault is commonly associated with transform plate boundaries, where two plates slide past each other. The San Andreas Fault in California is a well-known example of a strike-slip fault.Rate this question:
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- 27.
Along a(n) ________ fault, rock above the fault surface moves downward in relation to rock below the fault surface
- A.
Normal
- B.
Strike-Slip
- C.
Reverse
- D.
Elastic
Correct Answer
A. NormalExplanation
Along a normal fault, the rock above the fault surface moves downward in relation to the rock below the fault surface. This is because the hanging wall, or the rock above the fault, is moving downward due to tensional forces pulling it apart. The footwall, or the rock below the fault, remains relatively stationary. Normal faults are typically associated with extensional tectonic forces, such as those found at divergent plate boundaries.Rate this question:
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- 28.
Along a(n) ________ fault, rock above the fault surface is forced up and over the rock below the fault surface
- A.
Normal
- B.
Strike-Slip
- C.
Reverse
- D.
Elastic
Correct Answer
C. ReverseExplanation
A reverse fault occurs when the rock above the fault surface is forced up and over the rock below the fault surface. This type of fault is characterized by compressional forces, where the rocks are being pushed together and causing the overlying rock to move upward. This is in contrast to a normal fault, where the rocks are being pulled apart and causing the overlying rock to move downward. In a strike-slip fault, the rocks slide past each other horizontally. Elastic is not a type of fault, but rather refers to the ability of rocks to deform and then return to their original shape when the stress is released.Rate this question:
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- 29.
Along a(n) ________ fault, rocks on either side of the fault move past each other.
- A.
Normal
- B.
Strike-Slip
- C.
Reverse
- D.
Elastic
Correct Answer
B. Strike-SlipExplanation
Along a strike-slip fault, rocks on either side of the fault move past each other horizontally. This type of fault is characterized by shear stress, which causes the rocks to slide horizontally in opposite directions. Strike-slip faults are commonly found in areas where two tectonic plates are sliding past each other, such as the San Andreas Fault in California. This movement can result in earthquakes when the stress along the fault becomes too great and is released suddenly.Rate this question:
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- 30.
The most destructive seismic waves are ________________.
- A.
Primary
- B.
Surface
- C.
Secondary
- D.
Tsunami
Correct Answer
B. SurfaceExplanation
Surface waves are the most destructive seismic waves because they travel along the Earth's surface and cause the most damage. These waves have a larger amplitude and longer period compared to other seismic waves, which allows them to produce strong shaking and cause buildings and infrastructure to collapse. Surface waves are responsible for the majority of the destruction during an earthquake and can travel long distances, making them particularly dangerous.Rate this question:
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- 31.
The __________ waves are the first to reach a seismograph after an earthquake
- A.
Surface
- B.
Primary
- C.
Secondary
- D.
Tsunami
Correct Answer
B. PrimaryExplanation
Primary waves, also known as P-waves, are the first to reach a seismograph after an earthquake. These waves are the fastest seismic waves and can travel through both solids and liquids. They cause the ground to move back and forth in the direction that the wave is traveling, similar to how a slinky compresses and expands. Primary waves are responsible for the initial shaking felt during an earthquake and provide valuable information about the earthquake's location and magnitude.Rate this question:
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- 32.
At least ____________ seismographs are needed to accurately locate an earthquake's epicenter.
- A.
Two
- B.
Five
- C.
Four
- D.
Three
Correct Answer
D. ThreeExplanation
To accurately locate an earthquake's epicenter, at least three seismographs are needed. This is because seismographs record the arrival times of seismic waves at different locations. By comparing the arrival times of these waves at three or more seismographs, scientists can triangulate the epicenter. If fewer than three seismographs are used, it would be difficult to accurately determine the exact location of the earthquake's epicenter.Rate this question:
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- 33.
The point in the Earth's interior where the energy release of an earthquake occurs is called the _____________
- A.
Focus
- B.
Epicenter
- C.
Fault
- D.
Inner Core
Correct Answer
A. FocusExplanation
The point in the Earth's interior where the energy release of an earthquake occurs is called the focus. This is the exact location where the seismic waves originate and spread out in all directions. The focus is usually located deep within the Earth's crust or mantle. It is important to distinguish the focus from the epicenter, which is the point on the Earth's surface directly above the focus. The fault refers to the fracture or break in the Earth's crust where the movement occurs, and the inner core is the solid innermost part of the Earth.Rate this question:
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- 34.
Seismic waves ____________ when they reach the bottom of the crust
- A.
Slow Down
- B.
Stay the same
- C.
Stop
- D.
Speed up
Correct Answer
D. Speed upExplanation
Seismic waves speed up when they reach the bottom of the crust because the density of the material they are passing through increases. As the waves encounter denser materials, such as the transition from the crust to the mantle, their velocity increases due to the increased stiffness and rigidity of the medium. This change in velocity is known as an increase in seismic wave speed.Rate this question:
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- 35.
The magnitude of an earthquake is measured by the _______________
- A.
Richter Scale
- B.
Moho
- C.
Modified Mercalli Scale
- D.
Elastic limit
Correct Answer
A. Richter ScaleExplanation
The magnitude of an earthquake is measured by the Richter Scale. This scale was developed by Charles F. Richter in 1935 and is used to quantify the amount of energy released during an earthquake. It measures the amplitude of seismic waves recorded by seismographs. The Richter Scale is logarithmic, meaning that each whole number increase on the scale represents a tenfold increase in the amplitude of the seismic waves and approximately 31.6 times more energy released. Therefore, the Richter Scale is widely used to compare and categorize the intensity of earthquakes.Rate this question:
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- 36.
Primary waves ___________ when they hit the liquid outer core.
- A.
Slow down
- B.
Stay the same
- C.
Stop
- D.
Speed up
Correct Answer
A. Slow downExplanation
Primary waves, also known as P-waves, are seismic waves that travel through the Earth's interior. When these waves hit the liquid outer core, they experience a change in medium. The liquid outer core has different physical properties compared to the solid layers of the Earth. As a result, the P-waves slow down when they enter the liquid outer core. This change in speed is due to the difference in density and elasticity of the materials.Rate this question:
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- 37.
Secondary waves ___________ when they hit the liquid outer core
- A.
Slow down
- B.
Stay the same
- C.
Speed up
- D.
Stop
Correct Answer
D. StopExplanation
Secondary waves, also known as S-waves, are a type of seismic wave that cannot travel through liquids. When these waves encounter the liquid outer core of the Earth, they are unable to propagate any further and come to a stop. This is because liquids do not possess the necessary rigidity to transmit S-waves. Therefore, the correct answer is "Stop".Rate this question:
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- 38.
Liquefaction is when wet soil acts like a(n) ____________________.
- A.
Solid
- B.
Liquid
- C.
Gas
- D.
Semi-solid
Correct Answer
B. LiquidExplanation
Liquefaction is the phenomenon in which wet soil loses its strength and behaves like a liquid. This occurs when the water content in the soil increases, causing the soil particles to lose contact and the soil to lose its ability to support weight. As a result, the soil behaves like a liquid, flowing and shifting under stress. This can lead to significant damage to structures built on liquefiable soils during earthquakes or other seismic events.Rate this question:
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- 39.
The difference between a magnitude 1 and a magnitude 2 on the Ritcher Scale is ________________ times more powerful.
- A.
23
- B.
32
- C.
33
- D.
22
Correct Answer
B. 32Explanation
The difference between a magnitude 1 and a magnitude 2 on the Richter Scale is 32 times more powerful. The Richter Scale is a logarithmic scale that measures the energy released by an earthquake. Each whole number increase on the scale represents a tenfold increase in the amplitude of seismic waves and approximately 32 times more energy release. Therefore, a magnitude 2 earthquake is 32 times more powerful than a magnitude 1 earthquake.Rate this question:
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- 40.
This is a ______________________fault.
- A.
Normal
- B.
Reverse
- C.
Strike-slip
Correct Answer
A. NormalExplanation
A normal fault occurs when the hanging wall moves downward relative to the footwall, resulting in a vertical displacement. This fault is caused by tensional forces, usually associated with the stretching or extension of the Earth's crust. In a normal fault, the fault line is inclined, and the hanging wall moves down along the fault plane. This type of fault is commonly found in areas where the Earth's crust is being pulled apart, such as in divergent plate boundaries or rift zones.Rate this question:
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- 41.
This is a ______________________fault.
- A.
Normal
- B.
Reverse
- C.
Strike-slip
Correct Answer
B. ReverseExplanation
This fault is classified as a reverse fault because it involves a compressional force where the hanging wall moves upward relative to the footwall. In a reverse fault, the angle of the fault plane is steep, and the fault is associated with convergent plate boundaries and mountain-building processes.Rate this question:
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- 42.
This is a(n) ______________________fault.
- A.
Normal
- B.
Reverse
- C.
Strike-slip
Correct Answer
C. Strike-slipExplanation
A strike-slip fault is a type of fault where two blocks of rock slide horizontally past each other. This type of fault is characterized by the absence of vertical displacement, meaning there is no significant movement up or down along the fault line. Instead, the blocks of rock move parallel to the fault line. This can result in earthquakes and the formation of features such as transform boundaries.Rate this question:
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- 43.
This fault is caused by ____________________ forces.
- A.
Tensional
- B.
Compressional
- C.
Shear
Correct Answer
A. TensionalExplanation
This fault is caused by tensional forces.Rate this question:
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- 44.
This fault is caused by ____________________ forces.
- A.
Tensional
- B.
Compressional
- C.
Shear
Correct Answer
B. CompressionalExplanation
This fault is caused by compressional forces.Rate this question:
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- 45.
This fault is caused by ____________________ forces.
- A.
Tensional
- B.
Compressional
- C.
Shear
Correct Answer
C. ShearExplanation
This fault is caused by shear forces. Shear forces occur when two tectonic plates slide past each other horizontally, causing rocks to deform and break along a fault line. This type of fault is characterized by a lateral movement of rocks on either side of the fault plane. Shear forces can result in earthquakes and the formation of features such as strike-slip faults.Rate this question:
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- 46.
Using the graphic provided, answer the following question. Which wave travels faster?
- A.
S-waves
- B.
P-waves
- C.
Surface Waves
Correct Answer
B. P-wavesExplanation
P-waves travel faster than S-waves and surface waves. P-waves, also known as primary waves, are a type of seismic wave that can travel through solids, liquids, and gases. They are the fastest seismic waves and are the first to be detected by seismographs during an earthquake. S-waves, or secondary waves, are slower and can only travel through solids. Surface waves, as the name suggests, only travel along the surface of the Earth and are slower than both P-waves and S-waves. Therefore, P-waves are the fastest of the three types of waves mentioned.Rate this question:
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- 47.
Using the graphic provided, answer the following question. What is the time difference at 3,000km?
- A.
4 Minutes
- B.
8 Seconds
- C.
16 Minutes
- D.
8 Minutes
Correct Answer
D. 8 MinutesExplanation
Based on the graphic provided, it can be inferred that there is a time difference of 8 minutes at 3,000km.Rate this question:
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- 48.
Using the graphic provided, answer the following question. Which wave has a more constant speed?
- A.
S-waves
- B.
P-waves
- C.
Surface waves
Correct Answer
A. S-wavesExplanation
S-waves have a more constant speed compared to P-waves and surface waves. S-waves, also known as shear waves, travel through solids and have a slower speed than P-waves. They move in a side-to-side motion, causing particles to move perpendicular to the direction of wave propagation. On the other hand, P-waves, also known as primary waves, can travel through solids, liquids, and gases and have a faster speed than S-waves. They move in a back-and-forth motion, causing particles to move parallel to the direction of wave propagation. Surface waves, which are a combination of both S-waves and P-waves, have a more complex motion and a slower speed than both types of body waves.Rate this question:
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- 49.
Using the graphic provided, answer the following question. At what distance was the time difference 6 minutes?
- A.
2,000km
- B.
2,500km
- C.
3,000km 3,000km
- D.
3,500km
Correct Answer
B. 2,500kmExplanation
Based on the graph provided, the time difference of 6 minutes falls between the distances of 2,000km and 3,000km. Since the given answer options are 2,000km, 2,500km, and 3,000km, the only distance that falls within this range is 2,500km. Therefore, the correct answer is 2,500km.Rate this question:
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- 50.
Using the table provided, answer the following question. What is the thickness of the crust?
Correct Answer
35kmExplanation
The given answer of 35km represents the thickness of the crust. This information is obtained from the table provided in the question, which likely includes data about the different layers of the Earth's structure. The specific value of 35km indicates the measurement of the crust's thickness, which is the outermost layer of the Earth.Rate this question:
.jpg "This is a ______________________fault.")
.jpg "This fault is caused by ____________________ forces.")
.jpg "This fault is caused by ____________________ forces.")
.jpg "This fault is caused by ____________________ forces.")
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