Author Question: The Earth's magnetic field is attributed to the A) flow of molten liquid in Earth's inner core. ... (Read 149 times)

Chelseaamend · **on:** Jul 29, 2018

The Earth's magnetic field is attributed to the

A) flow of molten liquid in Earth's inner core.
B) flow of molten fluid in Earth's outer core.
C) movement of lithospheric plates in the outer mantle.
D) movement of lithospheric plates at Earth's surface.

Question 2

The mantle can be separated into two different portions: the lower mantle and the upper mantle. The lower mantle is

A) completely solid due to extreme pressure that prevents iron-rich silica rocks from melting.
B) composed of silly putty that flows like molasses.
C) rigid and has no capability of flow.
D) predominantly liquid silica.