is likely to host a waterfall or steep rapids today.

PHSC 210 Quiz 3

1. A(n) _______________ is likely to host a waterfall or steep rapids today.
2. __________ are erosional features produced by valley/alpine glaciers.
3. Which of the following is not a very long‐lived, radioactive isotope?
4. Which of the following describes radioactive decay by beta particle emission?
5. This North American river feature is often used by creation scientists to bolster the young‐earth model.
6. What fundamental concept states that in a horizontal sequence of sedimentary rock layers, each higher bed is younger than the bed below it?
7. A worm would stand a poor chance of being fossilized because _____________.
8. Which process occurs where a glacier enters the sea?
9. Desert pavement is the result of _______________.
10. Who is credited with formulating the doctrine of uniformitarianism?
11. The term “glacial drift” _________________.
12. Where is the world’s largest ice sheet located today?
13. A name commonly used as a synonym for the Ice Age is ______________.
14. Abrasion and plucking generally involve what part of a glacier?
15. An unconformity is a buried _________________.
16. The _________ is the concept that ancient life forms evolved in a definite order and therefore their fossils can help determine the geologic ages of strata.
17. All of the following are erroneous assumptions made by most scientists who employ radiometric dating EXCEPT:
18. Which of the following denotes the divisions of the geologic time scale in correct order of decreasing lengths of time beginning with the longest time interval and ending with the shortest?
19. ____________ is an irregular, usually thin till layer laid down by a retreating glacier.
20. The percentage of radioactive isotope remaining in a radioactive decay process is 40%. How many half‐lives have elapsed since the material was 100% parent atoms?

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