Which of the following is true about how a stream erodes material?
A. Water cannot erode unless it is carrying sediment.
B. Abrasion is concentrated on the upstream side of obstructions.
C. Turbulence of the water is less important than the temperature, which affects viscosity.
D. Erosion occurs equally on two sides of a bend.
E. All of these choices are correct.
Answer: B
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Which of the following Significant World earthquakes caused no casualties and little impact?
a. Alaska, U.S.A. 2002 b. Tangshan, China 1976 c. Loma Prieta, California, U.S.A. 1989 d. Kobe, Japan 1995 e. Christchurch, New Zealand 2011
Smaller grid spacing in numerical weather prediction models typically leads to:
a. reduced accuracy in predicting the location of large anticyclones. b. better prediction of small-scale weather phenomena. c. better prediction of jet streams. d. both a and c
Mass wasting can be an important source of sediment carried in a stream
Indicate whether the statement is true or false
The National Environmental Policy Act requires that ____.
A. an environmental impact statement (EIS) must be developed for every major federal project likely to have an effect on environmental quality B. all companies with more than 50 employees must have an environmental impact minimization policy and demonstrate its effectiveness C. federal projects cannot cause more than minimal harm to the environment D. companies with stringent environmental protection policies will receive substantial tax breaks E. state and local agencies can bar federal projects if they are believed to adversely impact the environment