What did the differing paleomagnetic records for each continent show?
a. each continent had its own magnetic pole during successive geological periods
b. that the magnetic poles for each continent had moved over geological time
c. that the magnetic poles have remained in one location and each of the continents has moved
d. that both the poles and the continents have moved over time
e. none of these
c. that the magnetic poles have remained in one location and each of the continents has moved
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Most forms of energy can be classified as either
a. chemical or physical b. kinetic or mechanical c. potential or mechanical d. chemical or kinetic e. potential or kinetic
Complete the following nuclear equation:
Bi ? ?? + 
e
A.
 Pb |
B.
 Pb |
C.
PoD.
 Th |
E. none of the above
What are the various layers of Earth and what are they made of? Also, are they liquid or solid?
What will be an ideal response?
In order to make a rapid transition to renewable energies, countries such as the United States will have to
A) reduce subsidies to the fossil fuel industry. B) reduce subsidies to renewable energy development to create economic parity. C) manufacture smaller, more fuel efficient cars and trucks. D) strengthen its ties and involvement with the Middle East.