Focus On Earth Science: California Grade 6

Chapter 6: Earthquakes

Standards Review

1.
What is the cause of the vibrations felt during an earthquake? 1.d
A)rocks breaking under pressure
B)forces pushing/pulling on rocks
C)elastic rebound
D)all of the above
2.
A divergent boundary is a boundary between two plates that __________. 1.e
A)move toward each other
B)converge
C)slide along each other
D)move away from each other
3.
What is a transform boundary? 1.e
A)A transform boundary is when two plates slide past one another.
B)A transform boundary is when two plates collide.
C)A transform boundary is when two plates move toward each other.
D)A transform boundary is when two plates pull away from each other.
4.
Seismic waves speed up as they pass through the __________. 1.g
A)aesthenosphere
B)outer core
C)boundaries
D)inner core
5.
What kind of waves do earthquakes transmit? 1.g
A)tidal waves
B)seismic waves
C)sound waves
D)air waves
6.
Which form of energy is transformed into seismic waves during an earthquake? 1.g
A)radiation
B)kinetic energy
C)potential energy
D)fusion
7.
What is the point on Earth's surface where an earthquake's energy is received? 1.g
A)center
B)focus
C)epicenter
D)equator
8.
From where do seismic waves originate? 1.g
A)center
B)epicenter
C)focus
D)equator
9.
Which waves cause the most damage during an earthquake? 1.g
A)ones that travel deep within Earth
B)ones that travel along the surface
C)ones that travel perpendicular to the mantle
D)ones that only travel downward
10.
Which waves cause particles to vibrate at right angles to the direction in which they are moving? 1.g
A)sound waves
B)S-waves
C)P-waves
D)seismic waves
11.
The intensity of an earthquake is measured based on which of the following? 1.g
A)the effects of ground shaking
B)the size of the seismic waves
C)the amount of energy released
D)the number of jolts
12.
How do seismographs approximate the location of an epicenter? 1.g
A)The farther apart the arrival times of the different waves are, the farther away the earthquake is.
B)The closer the arrival times of the different waves are, the farther away the earthquake is.
C)The farther apart the arrival times of the different waves are, the closer the earthquake is.
D)The arrival times have nothing to do with approximating the earthquake's location.
13.
How does the Richter scale measure the energy an earthquake releases? 1.g
A)It records the timing of the waves.
B)It records the height of the waves.
C)It records the distance between the waves.
D)It records the type of waves.
14.
Which earthquake causes the most damage? 1.g
A)intensity IV
B)intensity Vlll
C)intensity Xll
D)intensity III
15.
How do seismologists predict earthquakes? 1.g
A)They measure the electrical conductivity of rocks.
B)They measure movement along fault lines.
C)They monitor groundwater levels.
D)all of the above
16.
Which of these generally cause the most injuries during an earthquake? 1.g
A)collapsing buildings and structures
B)shaking of the ground
C)fires
D)tsunamis
17.
Why might the government in earthquake proned regions not grant permits for building on land where soil is made of loose sediment? 2.d
A)gas and water pipes may get broken
B)the buildings may not be strong enough
C)the buildings may sink into the soil
D)seismic sea waves may occur
18.
______ are seismic ocean waves triggered by earthquakes. 2.d
A)Liquefaction
B)Landslides
C)Tsunamis
D)High tide
19.
Which is the safest place to be during an earthquake? 2.d
A)near a window
B)in an interior doorway
C)next to objects on a shelf
D)outside near power lines
20.
Which of these should never be done right after an earthquake? 2.d
A)leave the building
B)turn off gas lines
C)turn off water lines
D)go to the beach
Grade 6
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