How do geologists know that diamond is the hardest mineral?
A) They conduct molecular analyses.
B) They conduct a crush test.
C) They conduct a scratch test.
D) They conduct a streak test.
Answer: C
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The more one eats from the local food shed, the more one is likely to be a(n)
A) locavore. B) omnivore. C) vegetarian. D) herbivore. E) carnivore.
Different isotopes are useful in different dating processes. Suppose we wished to determine the age of an object which we suspect to be approximately 100 years old. An isotope with which of the following half-lives would be most appropriate for this project?
A) 5 years B) 50 years C) 500 years D) 5,000 years
Doubling time refers to
A) the number of years it takes for food production to double in quantity. B) the number of years it takes for a population to double in size. C) the number of years it takes for a country's economy to double in value. D) the number of months it takes for a baby to double its birth weight. E) the number of weeks it takes for the Dow Jones Average to double.
Most of the coal mining in the United States is done by
a. open-pit mining b. underground mining c. both