Critical Thinking
According to the accompanying diagram, what percentage of U.S. commercial energy is converted to a useful form or material?
What will be an ideal response?
9% as useful energy + 7% as petrochemicals = 16% useful energy form or material.
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When he does work on a cart in half the time, his power output is
A. twice. B. half. C. the same. D. none of the above
Which of the following can influence whether a coast gains or loses sand with time?
A) the amount of precipitation on land B) the amount of sediment in rivers C) a longshore current D) prevailing wind direction E) All of these are correct.
Volcanism at divergent plate boundaries is most often associated with which magma type? What causes rocks to melt in these settings?
What will be an ideal response?
From this cross section of the Grand Canyon, what are the oldest rocks or structures?
A. Mesozoic sedimentary rocks B. Hurricane Fault and faults along the Grand Wash Cliffs C. Late Cenozoic basalts D. Precambrian metamorphic rocks and granite E. Precambrian sedimentary and igneous rocks