Eart Science Review
Question 1 .1 out of 1 points Why might the era we live in today one day be called the "Anthropocene"?
Selected Answer: Because humans are causing significant changes to the planet.
Correct Answer: Because humans are causing significant changes to the planet. . Question 2 .0 out of 1 points Suppose an electric-generating power plant is about to be built near your house. The local government has not decided whether to allow coal, nuclear, or oil as fuel for the plant (natural gas is not an option). Some groups argue coal is the best choice because there is a 200-year supply and using coal reduces our dependence on foreign oil. Critics argue that burning coal produces three times more global-warming gasses than oil. Coal also produces more dust and expels more acid-rain-causing gases than oil. Others argue that nuclear-generated power produces no greenhouse gases and no other atmospheric pollution. Critics argue that there is presently no long-term location to store the radioactive waste that will be generated and question the safety of nuclear power. Over the life of the plant, nuclear is the least expensive option, followed by coal and then oil. Which of the earth-system scientist's roles is best illustrated by this paragraph?
Selected Answer: Informing society
Correct Answer: Use of earth resources . Question 3 .0 out of 1 points Which of the following natural hazards are we most likely to try to prevent?
Selected Answer: Tornados
Correct Answer: Floods . Question 4 .0 out of 1 points A hypothesis is supported by more scientific observation and research than a theory.
Selected Answer: True
Correct Answer: False . Question 5 .1 out of 1 points Pluto was discovered in 1930, becoming the 9th planet in the solar system. As telescopes improved, other Sun-orbiting objects were discovered. Some of those were even larger than Pluto. By 2005, it was becoming apparent that many more
Selected Answer: Because humans are causing significant changes to the planet.
Correct Answer: Because humans are causing significant changes to the planet. . Question 2 .0 out of 1 points Suppose an electric-generating power plant is about to be built near your house. The local government has not decided whether to allow coal, nuclear, or oil as fuel for the plant (natural gas is not an option). Some groups argue coal is the best choice because there is a 200-year supply and using coal reduces our dependence on foreign oil. Critics argue that burning coal produces three times more global-warming gasses than oil. Coal also produces more dust and expels more acid-rain-causing gases than oil. Others argue that nuclear-generated power produces no greenhouse gases and no other atmospheric pollution. Critics argue that there is presently no long-term location to store the radioactive waste that will be generated and question the safety of nuclear power. Over the life of the plant, nuclear is the least expensive option, followed by coal and then oil. Which of the earth-system scientist's roles is best illustrated by this paragraph?
Selected Answer: Informing society
Correct Answer: Use of earth resources . Question 3 .0 out of 1 points Which of the following natural hazards are we most likely to try to prevent?
Selected Answer: Tornados
Correct Answer: Floods . Question 4 .0 out of 1 points A hypothesis is supported by more scientific observation and research than a theory.
Selected Answer: True
Correct Answer: False . Question 5 .1 out of 1 points Pluto was discovered in 1930, becoming the 9th planet in the solar system. As telescopes improved, other Sun-orbiting objects were discovered. Some of those were even larger than Pluto. By 2005, it was becoming apparent that many more