Quiz 3

MULTIPLE CHOICE QUESTIONS

1. What are the three main types of rock?

  • B. Igneous,metamorphic,sedimentary

2. Which type of rock is formed when molten magma or lava solidifies?

  • A. igneous

3. What is an igneous or sedimentary rock that has been changed by extreme pressure and heat?

  • D. metamorphic

4. For fault A, in the figure above, what principle allows you to determine its relative age with respect to the stratigraphic sequence?

  • D) principle of cross-cutting relationships

For questions 5, 6, 7 and 8 refer to the diagram above

5. For the illustration above, what would be the change in atomic number from parent element to daughter element as a result of alpha emission?

  • D) -2

6. For the illustration above, what would be the change in atomic number from parent element to daughter element as a result of beta decay?

  • A) +1

7. For the illustration above, what would be the change in atomic mass from parent element to daughter element as a result of alpha emission?

  • B) - 4

8. For the illustration above, what would be the change in atomic mass from parent element to daughter element as a result of beta decay?

  • E) There will be no change in atomic mass.

For questions 9 and 10 refer to the diagram above:

9. For the block diagram above, which of the following statements is(are) true?

  • E) Both B and C are true statements.

10. What stratigraphic principle allowed you to answer question 9?

  • D) principle of cross-cutting relationships

11. An isotope that is undergoing radioactive decay is called a _____, and an isotope that forms as a result of radioactive decay is called a _____.

  • parent, daughter

12. In the process of alpha decay. How does the daughter element compare to the parent with respect to atomic number and mass?

  • The daughter element reduces its atomic number by 2 and its atomic mass by 4

13. In beta decay a neutron becomes a proton inside the nucleus of an atom. What changes the atomic mass, atomic number or both?

  • There is an increase in the atomic number, but the mass remains the same.

TRUE OR FALSE QUESTIONS

14. Numerical age is the age of a rock or geological feature in years.

  • True

15. An unconformity is a gap in the stratigraphic sequence.

  • True

16. In the photo (ABOVE) of the stratigraphic sequence of the Grand Canyon, the Redwall Limestone is the youngest layer.

  • False

FILL IN THE BLANK

For questions 17, 18, and 19 refer to the picture above

17. A(n) ______is a surface of erosion that separates younger strata above from older igneous or metamorphic rocks below. NONCONFORMITY

18. A(n) ______is a surface of erosion in which the orientation of the older strata, below, are parallel to the younger strata, above. DISCONFORMITY

19. A(n) ______is a surface of erosion between two groups of sedimentary rocks in which the older strata , below, are at angle to the younger strata, above. ANGULAR UNCONFORMITY

20. A(n) ______is a gap in the rock record across which there is a significant amount of missing time. UNCONFORMITY

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