Explain why Mercury, Venus, and Mars lack plate tectonics. What will be an ideal response?
Because Mercury is so small, it cooled too rapidly for plate tectonics to begin.
Venus is most likely to have plate tectonics if not for the relatively thick lithosphere.
Additionally, due to a runaway greenhouse effect, Venus has little, if any, water available to
“soften” the rocks of the lithosphere. Venus could have had plate tectonics in the past.
Mars also has evidence of past tectonic activity, but no indication of current activity. Like
Mercury, Mars likely cooled too quickly to maintain any activity.
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Non-renewable resources include ____________________ sources such as oil and natural gas that cannot be recycled.
Fill in the blank(s) with the appropriate word(s).
The primary agent of contact metamorphism is ________
A) strain B) folding C) heat D) stress
As a comparison of Canada and Namibia shows, periphery countries have lower population densities than core countries
Indicate whether this statement is true or false.
Centripetal force does no work on a circularly-moving object because
A. it has no component of force in the direction of motion. B. of natural change in energy. C. rotational energy transfers to kinetic energy. D. none of the above.