Kepler's ________ law states that the orbits of planets are elliptical, with the Sun at one focus.
A. First
B. Second
C. Third
Answer: A
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When he does work on a cart in half the time, his power output is
A. twice. B. half. C. the same. D. none of the above
Suppose the present concentration of CO2 doubled in 100 years, and climate models predicted a 5oC increase in Earth's average temperature. Which of the following gases must also increase in concentration?
A. oxygen B. nitrogen C. methane D. water vapour
Use the following scenario to answer the next three questions.A large lending institution is evaluating the long-term pros and cons of building a hydroelectric dam in the Amazon rainforest. First, the lending institution is identifying the appropriate factors and then quantifying them. The factors include-but are not limited to-the direct expenses of building the dam, the lost opportunities from placing a dam on the river, and the profit from the dam. Also included is an analysis of who will be affected by the dam.Which of the following is not a major criticism of the type of analysis in the scenario?
A. The quantification process compares the value of the lives of indigenous people's lives with the lives of people in the city who would be receiving the electricity. B. Monetary values are placed on intangible things like the river running freely. C. The focus of this type of analysis would be mainly on the hydroelectric project rather than alternatives. D. People are willing to answer questions about how much they would spend to save the Amazon rainforest. E. These are all criticisms of this type of analysis.
How does the formation, break-up, and subsequent formation of supercontinents explain the origin of cratons?
What will be an ideal response?