2. Why is it a good \"place\" to search for extraterrestrial civilizations? (Sel

Question

2. Why is it a good "place" to search for extraterrestrial civilizations? (Select all that apply.)

a. The water hole is close enough to Earth for a manned mission to be feasible, so it makes sense to search for life there.

b. The region is within the habitable zone, so life is more likely to develop there.

c. The gap in the spectrum between H and OH could easily be identified by other life forms.

d. Without the precursors to life, life as we know it could not exist, so it makes sense to look where we know methane, ammonia and other precursors exist.

e. It is not cluttered by natural radio emission from other sources, and it is close to the 21-cm radiation of neutral hydrogen.

3. How does the stability of technological civilizations affect the probability that Earth can communicate with them?

a. The technological stability of a life-form is important in determining the origin of the signal.

b. The technological stability of a life-form is important because it needs to be advanced enough to receive and process a signal sent by another life-form.     

c. Technological stability is important for technological advancement in order to send signals that can travel faster than they currently do.

d. Technological stability of a life-form is important for the maintenance of the original equipment used to receive the signal.

4. What was the Miller experiment?

a. an attempt to artificially create life

b. an attempt to simulate conditions on Earth when life was first forming    

c. both of the above

d. none of the above

5. What was produced in the Miller experiment?

a. life

b. proteins    

c. amino acids

d. all of the above

6. What was the significance of the Miller experiment?

a. It was the first artificial production of life.

b. It showed that the potential for life can arise from conditions on a forming planet.    

c. both of the above

d. none of the above

Explanation / Answer

2) all

3)b

4)b

5)c

6)d

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