Author Question: A concentration of heat in the mantle capable of producing magma is called a ________. A) magma ... (Read 136 times)

ahriuashd · **on:** Jul 14, 2018

A concentration of heat in the mantle capable of producing magma is called a ________.

A) magma melt
B) plume
C) hot spot
D) basalt spout

Question 2

Magma tends to rise toward Earth's surface principally because ________.

A) water is an abundant constituent of magma
B) silica increases the viscosity of the magma
C) rocks become less dense when they melt
D) of convection in the mantle