What is the difference between recrystallization by subgrain rotation and grain boundary migration?
What will be an ideal response?
Answer: Subgrain rotation recrystallization occurs by rotation of subgrains until the misfit angle is larger than 10°. Grain boundary migration implies that the boundaries move into grains with higher dislocation densities, so that unstrained grains expand on behalf of strained grains.
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Commercial agricultural systems in the core are especially efficient in terms of food production per unit of
A) area. B) labor. C) fuel energy. D) water. E) both area and labor.
When using a psychrometer and the two temperatures read nearly the same, you can conclude that ________
you instrument reading is accurate a change in temperature is likely the dew point temperature is very low the air has a high relative humidity
The Older Dryas and Younger Dryas stages represented ________.
A. two cooling stages during warm-up from the last major glacial advance B. periods of dry climate in the last 20,000 years C. two of the more abrupt warming stages during the last glaciation D. one warming stage and one cooling stage during the last glaciation
The 500 mb pressure patterns displayed would bring ________ to Texas and the High Plains.
A. zonal flow, supporting storm formation B. a ridge of high pressure, suppressing storm formation C. zonal flow, neither suppressing nor supporting storms D. a trough of low pressure, supporting storm formation