A scientist identifies a rock sample as andesite. Why did he do so?
A) He observed that the rock has a lot of silica, making it mafic.
B) He observed that the rock has a lot of silica, making it ultra-mafic.
C) He observed that the rock has a decent amount of silica, making it intermediate.
D) He observed that the sample has little silica, making it felsic.
Answer: C
You might also like to view...
________ are large-scale agricultural enterprises devoted to the specialized production of one tropical product raised for the market
Fill in the blank(s) with correct word
Cloud seeding using silver iodide only works in?
a. ?cold clouds composed entirely of ice crystals. b. ?warm clouds composed entirely of water droplets. c. ?cold clouds with a low ratio of ice crystals to water droplets. d. ?clouds with more ice crystals than supercooled droplets. e. ?clouds that can produce precipitation.
Which of the following is an artificial coastal feature?
A) Baymouth bar B) Jetty C) Spit D) Tombolo
Which of the following is true about the water table?
A. In any area, the water table slopes a consistent amount and direction. B. The water table has a similar shape to topography but is more subdued. C. The water table is highest in elevation beneath lakes. D. All of these choices are correct. E. None of these choices are correct.