Scin 136 Midterm Exam All Possible Questions

SCIN 136 Midterm Exam All Possible Questions

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Question 1

Early voyagers used a variety of observations to help guide them including:

A. their sense of smell

B. cloud formations

C. the appearance of more birds

D. the direction of waves

E. all of the above

Question 2

The scientific theory about the formation of the oceans is that they first formed from (the original source of the water):

A. Magma displacements.

B. comet impacts

C. degassing of the early Earth

D. all of the above

E. both b and c

Question 3

Besides the Navy the primary organizations who carry out “classified”

A. The U.N.

B. Green Peace

C. Sierra Club

D. Oil companies.

E. Boeing

F. the banking industry

Question 4

One use today of the Navy’s SOSUS System is to monitor________ to prevent loss of life.

A. dumping of waste in the oceans

B. tsunamis

C. fish populations

D. oil drilling

E. tidal cycles

F. surfing championships

Question 5

The two types of technology that are mostly used to monitor deep-water oil drilling and to locate and recover deep shipwrecks are:

A. AUV’s and compasses

B. ROV’s and Side-scan sonar

C. GPS and radar

D. Chronometers and sextants

E. B.P. stock price forecasts and FEMA bureaucrats.

Question 6

The reason that ancient sailors had trouble calculating their LONGITUDE is that they did not have reliable

A. sextants

B. astrolabes

C. clocks

D. compasses

E. all of the above

Question 7

Our Sun is but one of billions of stars in the ________ galaxy.

A. Andromeda

B. Milky Way

C. Almond Joy

D. Nebular

E. Ursa Major

Question 8

Earth is approximately how old?

A.2500 years

B.120 million years

C.4.6 billion years

D.8.4 billion years

E.10 billion years

F. It is a tie with Larry King.

Question 9

The determination of the age of rocks by studying the decay of isotopes is...