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Understanding Geologic Time Chapter Exam

Exam Instructions:

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

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Question 1 1. The statement Rock A is fifty years older than Rock B is an example of _____.

Question 2 2. Rock Strata A contains Fossil X. It is below Rock Strata C which contains Fossil Z. Rock Strata B contains Fossil Y. It is above Rock Strata C. Which of the following is the correct order of the fossils (from oldest to youngest)?

Question 3 3. The statement Rock A is seventeen years old is an example of _____.

Question 4 4. Scientists couldn't perform numerical dating of rocks until they discovered _____.

Question 5 5. What kind of dating can we establish with the principle of fossil succession?

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Question 6 6. Two outcrops containing one index fossil each can only be matched up if scientists also find a third outcrop containing _____.

Question 7 7. Which of the following would NOT be a good trait for an index fossil?

Question 8 8. An index fossil represents a species that _____.

Question 9 9. Radiometric dating is a method used to date rocks based on what?

Question 10 10. Which of the following types of radioactive decay does not result in a change in the number of protons and neutrons within a nucleus, but does release a lot of energy?

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Question 11 11. Which of the following is the term used for the process by which an unstable atomic nucleus loses energy by releasing radiation?

Question 12 12. If a parent nucleus is feeling unstable because the ratio of neutrons to protons is too great, it might undergo a type of radioactive decay which results in the neutron emitting an electron (a beta particle) from the nucleus and turning into a proton. This describes what type of radioactive decay?

Question 13 13. An interface between discontinuous layers of rock is called _____.

Question 14 14. Any inclusion found within sedimentary rock must be _____ that rock.

Question 15 15. If Sedimentary Layer A occurs above Sedimentary Layer C and Sedimentary Layer B is below Sedimentary Layer C, which of the following is the correct order of the layers (from oldest to youngest)?

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Question 16 16. The Principle of Original Horizontality applies only to _____ rocks.

Question 17 17. The Mesozoic Era was the Age of Dinosaurs, and the current Cenozoic Era is the Age of _____.

Question 18 18. James needs to write a report which will describe the ups and downs of mammals in a previous time period. Why would discussing epochs make sense?

Question 19 19. What divides the two major eons (the Precambrian and Phanerozoic Eons)?

Question 20 20. How does an eon differ from an era?

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Question 21 21. A scientist would not be able to use radiocarbon dating to find the age of which of the following samples?

Question 22 22. Which of the following terms is used to describe the process by which an unstable atomic nucleus loses energy by releasing radiation?

Question 23 23. In uranium-lead dating, we see that two unstable uranium isotopes decay into stable lead isotopes. Which of the following statements is true about this decay?

Question 24 24. Which of the following statements is true of radiocarbon dating?

Question 25 25. _____ bones are more likely than _____ to be scattered, trampled, weathered, and/or crushed.

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Question 26 26. The best conditions for preservation of soft tissues are _____ temperatures and _____ air.

Question 27 27. Hard parts are more likely to become fossilized because they are LESS likely to:

Question 28 28. If two dinosaurs, one small and one large, both die in similar conditions and are both rapidly buried in the same material, which is more likely to be preserved as a fossil?

Question 29 29. In stratigraphic succession, scientists study the various _____ of rock.

Question 30 30. If Fossil A is found in a lower rock layer, and Fossil B is found in an upper rock layer, then Species A most likely _____.

Understanding Geologic Time Chapter Exam Instructions

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

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