Why is diorite considered a coarse-grained intermediate rock?
A) It contains a medium amount of silica.
B) It contains a lot of silica.
C) It contains very little silica.
D) It is made up of the elements in the middle of the periodic table.
Answer: A
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A rising parcel of air
A) increases in total kinetic energy B) decreases in potential energy C) must stay the same size D) does work on the air surrounding it E) passes through regions of increasing pressure as it rises
Oxygen-isotope analysis:
A) cannot be carried out on ice cores or sea floor sediments, but works well for tree ring analysis. B) has been shown to be of little or no use in the study of past climatic changes. C) relies on the fact that 16O evaporates from the ocean more readily than 18O. D) is very simple.
The west coast of the United States receives two high tides and two low tides of varying heights per
day. What kind of tidal pattern is this? a. Diurnal tides b. Semidiurnal tides c. Semidiurnal mixed tides d. Spring tides
In the visible light image, find the cloudless area off the coast of Oregon and Washington. Does this region contain relatively large amounts of water vapor, or relatively little water vapor? (Hint: Compare the visible light and water vapor images.) What could explain the lack of clouds here?
The question is based on Figure 20-3 showing visible light, infrared, and water vapor images of western North America and the northern Pacific Ocean basin taken on the same day and time. What will be an ideal response?