The deep-sea floor is characterized by sediment dominated by
a) calcite mud and other material derived from coral reefs
b) silt and sand derived from rivers and streams
c) fine dust and the remains of single-celled organisms
Answer: c) fine dust and the remains of single-celled organisms
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Which of the following is not true?
a) The Antarctic ice sheets are in constant motion. b) Antarctica can be thought of as a continent covered by a single enormous glacier. c) About half of the Arctic sea-ice volume has disappeared since 1979. d) The Arctic is a large landmass surrounded by a cold ocean. e) The Antarctic is generally colder than the Arctic.
Quartz has a specific gravity of about 2.65. A 5-gallon bucket of water weighs 40 pounds. How much would a 5-gallon volume of solid quartz weigh?
What will be an ideal response?
Groups such as SPA (Sustainable Population Australia) argue that
A) Australia's very low natural increase rate will create a slowing of economic production. B) Australia should institute policy to restrict population size. C) global warming will make Australia's interior more inhabitable and therefore able to support a larger population. D) that Australia is underpopulated by more than 8 million people. E) Australia's population has reached a sustainable level compared to other world regions
All of the cities described below are in North America and are classified as humid continental climates. Which city has the highest total rainfall?
A) city A, a leeward coastal city at 40 degrees north latitude B) city B, a city in the interior of the continent at 40 degrees north latitude C) city C, a city in the interior of the continent at 50 degrees north latitude