Explain how peridotite can melt at a divergent plate boundary without an increase in temperature
What will be an ideal response?
Melting occurs because the melting temperature decreases with decreasing pressure. Peridotite in the mantle rises to a lower depth at divergent boundaries with little or no decrease in temperature. The lower depth corresponds to lower pressure. The lower pressure results in a lower melting point and the peridotite partly melts.
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Use the analemma to find:
a) The subsolar point on November 10 (marked) b) The subsolar point on May 11 c) The subsolar point today d) The date(s) when the declination is 9°S e) The date(s) when the declination is 21°N
Use a diagram to illustrate how the Aggregate operation works.
What will be an ideal response?
Increased cloudiness as a result of warmer temperatures could provide both positive and negative feedbacks in the climate system
Indicate whether the statement is true or false
_________________ took a different path from most of the other Eastern bloc countries in that it did not distance itself from its Russian connection. This country has consequently experienced authoritarian governments well into the 21st century.
-Poland -Belarus -Hungary -Romania -Czech Republic