Why is there a relatively high risk of seismic activity in Oklahoma?
A. It is associated with drilling for gas and oil.
B. The crust is rebounding from the glacial ice of the Pleistocene.
C. This is a failed continental rift.
D. This is a bomb testing area.
E. This is a subduction zone.
Answer: A
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The Rocky Mountains
A) are significantly lower in elevation than the Appalachian Highlands B) are adjacent to the Piedmont C) features mountain-building, alpine glaciation, and erosion D) traverse the Great Lakes E) are found running parallel to the Atlantic coastline
Which of the following describes the time when pollution is most severe in urban areas?
A. when a large slow-moving anticyclone moves into an area B. when a storm system begins developing to the west C. when a cold upper-level low moves into a region D. when a warm front passes through the area
The gap in the geologic record (that an unconformity represents) is called _.
a. a hiatus b. an interface c. erosion d. a missing period
Following the eruption of the volcano Tambora in 1815, 1816 was known as the year ____________________
Fill in the blank(s) with correct word