Which of the common volcanic landforms is the largest in size?
a. shield volcano
b. composite volcano
c. cinder cone
d. volcanic dome
e. coulee
A
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What maintains a forced wave?
a. wave height b. wave period c. restoring force d. wavelength e. disturbing force
Examine the geologic time scale shown here. Which is the longest-lasting period of geologic time? Which is the shortest period? Why should these periods differ so much in duration?
What will be an ideal response?
Jet streams can form near Earth’s surface as well. One such jet develops just above the central plains of the United States, where it occasionally attains speeds exceeding 60 knots. This wind speed maximum, which usually flows from the south or southwest, is known as a(n) ____________________ jet
Fill in the blank with correct word.
Earthquakes along the San Andreas fault zone, for example, are repetitive—they reoccur in roughly the same regions over and over again—separated by decades or centuries because ________
A) plate boundaries move at regular rates so the interactions across plate boundaries are predictable and regular B) stress continues to build up all the time and when it is great enough to overcome friction there will be an earthquake and then the process will start over again C) there are areas that are weak and always break when small amounts of energy are applied to them D) faults are always moving or creeping so an earthquake will occur whenever two sides meet that have the right properties for an earthquake