In what two ways do minerals form from magma? What types of minerals dominate the minerals that
make up igneous rocks? What will be an ideal response?
As magma cools, minerals crystallize and grow. Basalts are dominated by ferromagnesian minerals
and granites by nonferromagnesian minerals. Hot water solutions derived from the magma invade
cracks in adjacent rocks and then crystallize.
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Which of the following features can be found in Karst topography?
a. Irregular terrain b. Sinkholes c. Lack of streams d. All of the above e. Both b and c
Days with temperatures above 90 degrees Fahrenheit and above 90 percent humidity are common in the southern United States
a. True b. False
Aerosols are
A. The principal gas involved in global warming B. Gases produced by industry C. Tiny particles and droplets suspended in the air D. Tiny droplets of a very specific chemical composition E. The principal gas involved in the greenhouse effect
When contamination enters groundwater it typically
A. moves along with the flowing groundwater down the slope of the water table. B. moves across the flowing groundwater in a perpendicular fashion. C. moves directly through the groundwater from top to bottom.