Author Question: Intermediate and felsic magmas usually arise where:a. mafic magma mixes with felsic material. b. ... (Read 109 times)

jayhills49 · **on:** Jul 15, 2018

Intermediate and felsic magmas usually arise where:a.
mafic magma mixes with felsic material.
b. volcanoes lie on continental margins inland of subduction zones.
c. plates diverge as spreading ridges form.
d. volcanoes lie above transform faults.
e. mafic magma mixes with felsic material AND volcanoes lie on continental margins inland
of subduction zones.

Question 2

Which is the correct ranking of regions with the most active volcanoes and volcanic activity?
1. Circum-Pacific belt
2. Mid-oceanic ridges
3. Mediterranean belt
4. Isolated sites like the Hawaiian Islands
a. 2, 1, 3, 4
b. 1, 3, 2, 4
c. 2, 3, 4, 1
d. 1, 2, 3, 4
e. 3, 2, 1, 4