A scientist identifies a rock sample as rhyolite. 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 sample has little silica, making it felsic.
D) he observed that the sample has a lot of silica, making it felsic.
Answer: D
You might also like to view...
Which location on this figure from the Investigation is located on the abyssal plain?
A) 1
B) 2
C) 3
D) 4
E) 5
The fact that Japan is so well developed indicates
A. comparative advantages that do not include natural resources. B. abundant natural resources. C. strategic advantages unavailable to other east Asian countries. D. that Japan is less dependent on imported energy than China.
The summer solstice in the Northern Hemisphere occurs on this date
June 21 March 21 September 21 December 21
A chain of active volcanoes formed at a subduction zone where an oceanic plate is subducted under another oceanic plate is known as an _________________.
a. island arc b. broad-based rift valley c. accreted terrane d. midoceanic ridge