Which numbered feature on this figure is critical to enable a rock slide to start?
A) 1, a linear or curved scar marking where the slide pulled away from the hill
B) 2, small fractures within the sliding block
C) 3, layers, fractures, or some other discontinuity inclined downslope
D) 4, the front of the slide, where it overruns the land surface
E) 5, a valley or other open space in front of the slide
E) 5, a valley or other open space in front of the slide
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Underlying all machines is
A. energy conservation. B. that power input always equals power output. C. that energy input always equals energy output. D. all of the above
For Marxists, the internal contradictions that capitalism faces in regards to consumption include all of the following EXCEPT
A) getting more and more profit out of goods inevitably leads to overconsumption. B) producing too much drives down prices, and thus, profits. C) employers cannot pay their workers the value of the products they produce. D) getting more and more profit out of goods inevitably leads to underconsumption. E) all of the above
The driving force of all hurricanes is
A) the release of latent heat. B) the subtropical jet stream. C) the Coriolis force. D) the polar jet stream.
Carefully examine the relative positions of the lettered arrows on the timeline below and estimate the ages represented by each arrow. Use the chart to answer this question.
Which represents the oldest known rocks?
A. A B. B C. C D. D E. E F. F