Are all equilibrium states stable? Why or why not?
What will be an ideal response?
The equilibrium states of a system can be represented as peaks (unstable) and valleys (stable). On disturbance, the system returns to stable equilibrium states but moves away from unstable equilibrium states. A system with a single feedback loop has a stable equilibrium state if the feedback loop is negative and an unstable equilibrium if the feedback loop is positive.
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One problem with censuses—even in the United States—is that they tend to undercount minority groups
Indicate whether this statement is true or false.
Which of the following is associated with mid-ocean ridges?
a) a great thickness of oceanic sediment trapped within the central rift b) very smooth topography as a result of the sedimentary cover c) melting of the entire thickness of the asthenosphere to produce magma d) compression that buckles the crust forming the ridge e) none of the above
The ___________ ____________ is the energy that causes ocean waves to form. Fill in the blank(s) with the appropriate word(s)
Most rain at middle latitudes is produced by the ice crystal process. This is because ____
A) clouds in these region have below-freezing temperatures at all levels but experience strong uplifts B) clouds in these regions can extend into regions where air temperatures are below freezing C) ice crystals evaporate more slowly than water droplets in clouds of these regions D) most rain occurs during the winter in these regions