Original rocks are sometimes found underneath a volcano encased in

A) Magma

B) Mesosphere

C) Lava

D) Athenosphere

E) Basalt

The Earth's magnetic field has reversed over ____ times in the last 200 million years.

a) 100

b) 3

c) 1,000,000

d) 1000

e) 300

The concept of continental drift is supported by evidence from

a) the Mid-Atlantic Ridge

b) the orientation of magnetic fields in ancient rocks

c) radiometric dating of ancient rocks

d) the triple junction

e) all of the above