Sunspots
a. are cooler than their surroundings.
b. are regions where material is rising from below the photosphere.
c. are the result of convection.
d. produce spicules.
e. are generally found near the poles of the Sun during sunspot maximum.
a
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A sedimentary rock can turn into an igneous rock by
A) compaction and cementation. B) compaction. C) melting and cooling. D) weathering and lithification.
Provided that in each case heat input is the same, boiling takes place more quickly
1) at sea level. 2) in a valley. 3) in the mountains. This is because 4) increased pressure on the surface of a liquid lowers its boiling point. 5) decreased pressure on the surface of a liquid lowers its boiling point. 6) water always boils quickest at sea level.
Diamonds are so sparkly and beautiful primarily because they
Of the six basic properties of life, biologists consider the most fundamental to be
A) response to environment B) reproduction C) order D) evolutionary adaptation