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Basics of Earth History & 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 "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!

Page 1

Question 1 1. Which statement about ice ages is true?

Question 2 2. When did the last ice age end?

Question 3 3. A period of low global temperatures and ice expansion from the poles is known as what?

Question 4 4. When average global temperatures decrease, what does global ice volume do?

Question 5 5. Which of the following factors may contribute to the onset of an ice age?

Page 2

Question 6 6. The hypothesis that states that large galaxies like the Milky Way Galaxy formed by way of gravitational collapse from a single, turbulent, large gas cloud, is called:

Question 7 7. The hypothesis that states large galaxies like the Milky Way Galaxy formed from the combinations of small galaxies and star clusters, is called the:

Question 8 8. The iron in your blood and the calcium in your bones all originally came from:

Question 9 9. Based on what you learned in this lesson, newer stars would be expected to have:

Question 10 10. How old do we believe our galaxy to be?

Page 3

Question 11 11. The Cretaceous period lasted from ___________.

Question 12 12. The eruption at Thera is believed to have contributed to the decline of which civilization?

Question 13 13. Sixty-six million years ago, the world was filled with ___________.

Question 14 14. The destruction of the dinosaurs helped bring about the rise of _________ as the dominant creatures on Earth.

Question 15 15. When did the asteroid impact believed to contribute to the extinction of the dinosaurs occur?

Page 4

Question 16 16. The Earth was under continuous bombardment by meteorites and comets as it formed and continued to take shape. What was the significance of comets hitting the Earth during that time?

Question 17 17. How long after the Earth was formed did it take to achieve the state we recognize now?

Question 18 18. In its early stages, the Earth looked much different than it does now. How would you differentiate between the two stages?

Question 19 19. Which of the following is a common theory of how the Earth and other planets were formed?

Question 20 20. Where in the Milky Way galaxy is our solar system located?

Page 5

Question 21 21. Which of the following is an example of disaster taxa?

Question 22 22. One hypothesis for the Great Dying is a supernova, which is a(n) ______.

Question 23 23. The Great Dying occurred about ______.

Question 24 24. Pterosaurs are ______.

Question 25 25. The dinosaurs died off at the end of the _______.

Page 6

Question 26 26. A large nucleus may get to a more stable state by emitting two protons and two neutrons. This describes which type of radioactive decay?

Question 27 27. 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?

Question 28 28. 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 29 29. Which of the following is the term used for the process by which an unstable atomic nucleus loses energy by releasing radiation?

Question 30 30. Radiometric dating is a method used to date rocks based on what?

Basics of Earth History & 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 "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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