Examine the geologic time scale shown here. Which is the earliest period listed in the Mesozoic?
A) Cambrian
B) Permian
C) Triassic
D) Cretaceous
Answer: C
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Which of the following statements describes what is required for a forecast to show skill?
A. It must be better than a forecast based on persistence or climatology. B. It must be accurate over more than 90 percent of the forecast area. C. It must be accurate to within 2°C of the predicted temperature. D. It must use the analogue method of forecasting.
Look at the upper portions and margins of the alluvial fans shown on the map and in the stereogram (especially the alluvial fan at the mouth of “Grotto Canyon”). In recent years does it appear that erosion or deposition has been more prominent at the tops of these fans?
The questions on the following page are based on Figure 45-4, a stereogram of the Stovepipe Wells region of Death Valley, California, Figure 45-5, a portion of the “Stovepipe Wells, California” quadrangle (scale 1:62,500; contour interval 80 feet; north is to the left side of the stereogram and topographic map), and Map T-27a, color aerial imagery of this same region of Death Valley. Several large alluvial fans that come out of the Tucki Mountains are coalescing to form a bajada 136°35'17"N, 117°06'35"W).
Figure 45-5: USGS “Stovepipe Wells, California” quadrangle. North is to the left side of the page (scale 1:62,500; contour interval 80 feet, dotted lines represent half-interval contours<--N).
The direction of a gravitational field is
A) in the same direction of gravitational attraction. B) away from the center of gravity of an object. C) opposite to the direction of gravitational attraction.
Divergent plate boundaries around the world are indicated by
A. both seafloor spreading and subduction zones. B. seafloor spreading. C. hotspots. D. subduction zones.