Why is silicate the most prevalent mineral in igneous rock?
A) Silicates melt very easily.
B) Silicates make up most of the earth's crust.
C) Silicate is attracted to heat.
D) Silicates are very heavy, so they are perfect for magma.
Question 2
The lava at Kilauea volcano in Hawaii erupts at a temperature of approximately 1000 degrees Celsius. How could geologists overcome this problem when studying the lava flow?
A) Pour water on the lava.
B) Don't bother studying the lava flow.
C) Take pictures from far away and study them in the lab.
D) Wear heat-resistant clothing and use tools that reach the flow from a few meters away.
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