In practice, a good insulator
A. speeds negative heat flow.
B. stops heat flow.
C. slows heat flow.
D. all of the above
Answer: C
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Earth satellites in an elliptical orbit have greatest speeds when
A. farthest from the Earth. B. nearest the Earth. C. neither of these D. can't say
Lead-214 (Pb-214) that undergoes beta decay becomes ____
a. Pb-212 b. Bi-210 c. Bi-214 d. Tl-214 e. Tl-210
The most notable trace in the geologic record of human activities is likely to be a(n) ____
a. more diverse pollen record b. concrete and metal debris field left from cities c. expansion of farmland d. increase in carbon dioxide levels, as recorded by ice cores e. more alkaline ocean
Using the seismic gap method, scientists identify section "C" of a fault as a seismic gap. Which of the following possible answers correctly states what this means?
A. Section "C" is the least-likely section along this fault to have the next major earthquake. B. The next earthquake in section "C" is predicted to be rather weak. C. The next major earthquake will occur in section "C" of the fault. D. Section "C" will have the largest surface ruptures during the next earthquake along this fault. E. The next major earthquake will likely occur in section "C" but it is not a guarantee.