Geology 117 Exam 1 answers

Geology 117: The Oceans

Exam 1 answers (Spring 2002)

Overall Average: 73

Grading guidelines:

80 to 100 is A

60 to 80 is B

40 to 60 is C

Question: Correct Answer

1.) B abyssal plain

2.) D passage of earthquake waves

3.) B great ratio of ocean to land

4.) C Pangea

5.) C move away from each other

6.) E. - A and C only

7.) C similar to today

8.) C. Pacific Ocean

9.) B. older and deeper

10.) A is ductile

11.) B magma erupts underwater

12.) C spin axis is tilted

13.) B details of ocan floor not known

14.) B hotspot track

15.) B acidic

16.) A is longer

17.) C 3.8 billion years ago

18.) A ocean crust continually created, destroyed

19.) E 3,800 m

20.) D an accurate clock

21.) D transform margins

22.) D convergent

23.) A continental shelves

24.) C chain of islands

25.) E no driving force explanation

26.) A oceanic lithosphere is denser

27.) C continously produced

28.) A transform boundaries

29.) C continental slope

30.) C using various projections

31.) A near mid-ocean ridges

32.) D close to the poles

33.) D other oceans have slower spreading rates

34.) C trench

35.) E transform

36.) D erosion of continents

37.) D accurate clock (but any answer counted - duplicate question)

38.) A Pacific Ocean

39.) B thicker and less dense

40.) C mid-ocean ridge

41.) E convection currents

42.) E fracture zone

43.) E oceanic lithosphere created

44.) E none of the above

45.) D : A,B,C are all true

46.) D both A and B

47.) E age and thickness of seds increase

48.) E : B and C only

49.) C erosion leveled them off

50.) B outer core