Question 1
0/ 2pts
Dr.Austin'sestimation of the elevation change fromMt. Whitney to Death
Valley was incorrect. The correct amount is
Approximately 1,600feet
Approximately15,000feet
Approximately14,000feet
160 feet
Question 2
2/ 2pts
Which of the following is true of oceanic crust?
It makes up 71%of theearth's crust.
It makes up 29%of the earth's crust.
It averages 2,000feet above sea level.
It is the type of crust between Alaska and Siberia.
Question 3
2/ 2pts
The chance that you might experiencea natural disaster like an earthquake
firsthand is about _________.
100%
50%
magnitude.
severity.
Question 9
2/ 2pts
An earthquake's magnitude is
not able to be measured.
dimensionless.
measured by the Mercalliscale.
measured by satellite images.
Question 10
2/ 2pts
The amount of energy released by the Mt.St.Helen's eruption
was less than a lightning bolt.
was less than the energy expended by an average tornado.
was less than the Hiroshima atomic bomb.
was less than the amount of solar energy reaching the earth in 1day.
IncorrectQuestion 11
0/ 2pts
The MercalliScale measuresthe intensity
of earthquakes using a scale of Roman numerals.
of earthquakes in units of joules.
of hurricanes.
of landslides.
Question 12
2/ 2pts
The Pacific "Ring of Fire"is
a zone where little seismic activity occurs.
found mostly in the Atlantic Ocean and Europe.
in a 500mile circle around the Hawaiian Islands.
a circle around the earth where the earthquakes occur.
Question 13
2/ 2pts
The Pacific plate relative to Alaska is
undergoingconvergence creating a mid-ocean ridge.
undergoing subductioncreating an ocean trench and a mountain range.
moving past Alaska along a transform fault.
moving southward away from Alaska.
Question 14
2/ 2pts
The Wrangell Mountains are in
Alaska
Northern Europe
California
Argentina
IncorrectQuestion 15
0/ 2pts
The 1906 San Francisco earthquake was 8.25 on the Richter scale. The
Owens Valley earthquake of 1872 was
Larger than the San Francisco earthquake.
About the same as the San Francisco earthquake
Smaller than the San Francisco earthquake.
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