Why do winds move parallel to isobars high above Earth's surface, but angle across the isobars near the surface?
At high altitudes, the Coriolis effect acts to counterbalance the pressure gradient force, and the wind flows parallel to the isobars. Near the surface, friction is added to this relationship, reducing the Coriolis effect but not affecting the pressure gradient force. If the pressure gradient force and the Coriolis effect are not in balance, surface winds flow across the isobars into areas of low pressure.
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What grade of metamorphism occurs at a depth of 6 km and a temperature of 100 degrees C?
A) lithification of sedimentary rocks B) medium-grade metamorphism C) not found on Earth D) low-grade metamorphism
The primary force responsible for surface currents is ____
A) precipitation B) wind C) heat D) gravity
Slate is a very fine-grained foliated metamorphic rock that commonly exhibits cleavage
Indicate whether the statement is true or false
The Hawaiian Islands formed as the Pacific Plate has moved over a(n) ____________________
Fill in the blank(s) with correct word