What type of rock is shown in this photograph from the Investigation?
A. granite
B. metamorphic rocks
C. volcanic rocks, probably basalt
D. sedimentary rocks
Answer: A
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Describe the characteristics of an excellent guide fossil and provide one example
How does the character of a rock influence weathering
A. Rocks that are easily weathered and eroded generally form steep cliffs. B. Fractures and other discontinuities block the entry of water into a rock and so make the rock more resistant to weathering. C. Minerals that are soluble can be dissolved and reprecipitated and so are resistant to weathering. D. Rocks that are broken have more surface area and so weather faster. E. None of these choices are correct.
The annual global growth rate of the human population peaked at 2.1% in the ________ and has been declining ever since
A) early 1900s B) 1950s C) 1960s D) 1990s E) year 2000
Mount St. Helens exploded in 1980. Which of the following is not true?
A) It is a volcano. B) It is in the state of Washington. C) It caused salmon to change their spawning habits. D) It is quite unlike the other mountains near it. E) It had been dormant for more than 100 years.