The equatorward bending of height contours for the 500 mb level imply the presence of a trough because this represents a region of overall lower heights. A valley and a trough are hence equivalent in the upper air flow.
A trough is a linear structural depression with lateral length that occurs in geology. A trough can be a small basin or a natural rift, albeit it is lower than a trench. At the edge of tectonic plates, these landforms frequently form.
Trough, an extended depression in the seafloor that differs from oceanic trenches in that it is shallower, shorter, narrower, and topographically more mild. The Papuan Trough's maximum depth is 2,300 m (7,500 feet), while the Banda Trough's maximum depth is 7,440 m.
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Clay minerals can be weakened either when they absorb water (incorporate it into their mineral structures) or when they absorb water (bind it onto their crystal surfaces). This can destabilize a slope.
What can destabilize a slope?
Slope failure can be caused by a variety of events, usually a combination of several. For instance, poor construction on a steep slope may be followed by intense rainfall. Although in this instance excessive rain caused the incident, other variables also contributed to the slope becoming unstable.
What causes slopes to become destabilized?
This makes the soil heavier since water is denser than air. Slope instability can result from an increase in stress because weight is equal to force, which is equal to stress divided by area. The angle of repose can be altered by water (the slope angle which is the stable angle for the slope).
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The correct question is
Clay minerals can be weakened either when they _______ water (incorporate it into their mineral structures) or when they _______ water (bind it onto their crystal surfaces). This can destabilize a slope.
Earth's rotation causes air and water in the northern hemisphere to appear to move right and in the southern hemisphere to appear to move left
GROUNDWATER is the largest source of freshwater on earth.
B. Topic is under plate tectonics and involves divergence,convergence and transform plate boundary:)
