North Carolina Science Grade 6

Chapter 5: Earthquakes and Volcanoes

Earthquakes and Volcanoes

1.
What dictates the type of fault formed when a surface breaks?
A)the current barometric pressure
B)the type of soil involved at the location of the fault
C)the way in which the forces are applied to a rock
D)the weather conditions at the time of the faulting
2.
Which earthquake causes the most damage?
A)intensity IV
B)intensity Vlll
C)intensity III
D)intensity Xll
3.
Which form of energy is transformed into seismic waves during an earthquake?
A)kinetic energy
B)fusion
C)radiation
D)potential energy
4.
How do seismographs approximate the location of an epicenter?
A)The closer the arrival times of the different waves are, the farther away the earthquake is.
B)The farther apart 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.
5.
What causes the broad, gently sloping sides of a shield volcano?
A)colliding plates
B)basaltic lava
C)highly viscous lava
D)ocean floor spreading
6.
What is the point on Earth's surface where an earthquake's energy is received?
A)epicenter
B)focus
C)center
D)equator
7.
Why do so many volcanoes form on divergent and convergent plate boundaries?
A)Converging and diverging plates have nothing to do with volcanoes.
B)These plates get pushed up and create volcanoes
C)These plate separate to create volcanoes.
D)because melting plates cause magma to form beneath the surface
8.
Why don’t cinder cone eruptions last long?
A)because gas content is not involved with cinder cone eruptions
B)because cinder cone eruptions are caused by low gas content.
C)because cinder cone eruptions are caused by high gas content
D)because cinder cone eruptions are caused by high water content.
9.
From where do seismic waves originate?
A)focus
B)equator
C)epicenter
D)center
10.
How does the Richter scale measure the energy an earthquake releases?
A)It records the timing of the waves.
B)It records the height of the waves.
C)It records the type of waves.
D)It records the distance between the waves.
11.
How would you describe lava with a high viscosity?
A)watery
B)smooth
C)thick
D)fluid
12.
How do seismologists predict earthquakes?
A)They measure movement along fault lines.
B)They measure the electrical conductivity of rocks.
C)They monitor groundwater levels.
D)all answers are correct
13.
What is the connection between volcanoes and plate tectonic movement?
A)Plate movement causes rock to harden and cool underground.
B)Plate movement causes rocks to melt into magma.
C)Volcanoes cause plate tectonic movement.
D)No connection exists between volcanoes and plate tectonic movement.
14.
How are strike-slip faults formed?
A)Strike forces form them.
B)Slip forces form them.
C)Shear forces form them.
D)Gravitational forces form them.
15.
Compression forces cause __________ faults.
A)tension
B)normal
C)slip
D)reverse
16.
Which waves cause particles to vibrate at right angles to the direction in which they are moving?
A)sound waves
B)seismic waves
C)S-waves
D)P-waves
17.
What is tephra?
A)lava that has cooled in midair after an eruption
B)lava that cools beneath the surface before an eruption
C)very fluid lava
D)lava that is slowly released from fissures
18.
What kind of lava is most explosive?
A)lava that is high in iron
B)lava that is high in magnesium
C)lava that is low in silica
D)lava that is high in silica
19.
What is the cause of the vibrations felt during an earthquake?
A)all answers are correct
B)rocks breaking under pressure
C)elastic rebound
D)forces pushing/pulling on rocks
20.
What kind of waves do earthquakes transmit?
A)tidal waves
B)sound waves
C)seismic waves
D)air waves
Glencoe Online Learning CenterScience HomeProduct InfoSite MapContact Us

The McGraw-Hill CompaniesGlencoe

Please read our Terms of Use and Privacy Policy before you explore our Web site. To report a technical problem with this Web site, please contact the Web Producer.