List the positive and negative consequences of building a dam on a river
What will be an ideal response?
Positive
Control floods by impounding high discharges
Provides water during the dry season
Generation of electricity
Negative
Dams fill up with sediment
Enhanced erosion downstream of a dam
Changes in channel size and shape downstream of a dam
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Three other specific spot elevations are noted with an “x.” What are their elevations?
Use Figure 23.3 to do the following work and answer the question.
What will be an ideal response?
What general kind of weather (wet or dry) should Pocatello, Idaho (43° N, 112° W), expect over the next few hours? Why?
The following questions are based on the surface weather map shown below.
What will be an ideal response?
Which of the following is not the name of a chemical family?
A) heavy metals B) transition metals C) alkali metals D) alkaline-earth metals E) noble gases
Why do developing nations impose few or no restrictions on logging?
A) Most timber is extracted by local corporations that support the government. B) They are desperate for economic development. C) There is an infinite supply of timber because wood is a renewable resource. D) No ancient forests remain in developing nations. E) Local residents use most of the timber, and the government does not want to impose restrictions on its citizens.