Fill-In-The Blanks for Introduction to Geology - Chapter 1

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1. The major rock types on Earth are sedimentary, igneous and .

2. The most abundant element in the Earth's atmosphere is .

3. A hypothesis which has withstood many scientific tests is a .

4. The inner core of the Earth is thought to be a .

5. The lithosphere of the Earth is divided into approximately plates which move relative to each other.

6. New oceanic crust is created at .

7. When oceanic crust meets continental crust occurs.

8. The Andes Mountains are being developed along what type of plate margin? .

9. The Gulf Coast of Texas is what type of continental margin? .

10. The lithosphere "rides on" the .

11. The vast expanse of time that marks the life of the Earth is known as . One of the greatest challenges to geolgists is readjusting their thinking from day-to-day to a body of time that stretches back to 4.5 billion years ago.

12. The idea that geologic processes operate slowly through vast periods of time is embraced by the term .

13. Most sedimentary rocks consist of weathered fragments of .

14. As sedimentary rocks are buried more and more deeply, they are subjected to greater temperatures and pressures. This may result in the formation of .

15. As burial continues and heat increases, the formation of __ may occur .

16. If igneous or metamorphic or buried sedimentary rocks are uplifted and weathered __ may form. .

    For the following questions uses either continental (C) or oceanic (O) crust as your answers.

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17. Forms thin crustal plates. .

18. Composed of granite. .

19. Forms thick crustal plates. .

20. Relatively dense rocks. .

21. Composed of basalt. .

22. Rests isostatically at high elevations. .

23. Rests isostatically at lower elevations. .

24. Rests isostatically at lower elevations. .

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25. The most recent supercontinent on Earth was . .

26. Density is the ratio of . .

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