4.2 Restless Continents sci.

Question 1

the hypothesis that states that the continents once formed a single landmass, broke up, and drifted to their present locations.

Answer 1

continental drift

Question 2

the process by which new oceanic lithosphere forms as magma rises toward the surface and solidifies.

Answer 2

sea-floor spreading

Question 3

are places where sea-floor spreading takes place.

Answer 3

mid-ocean ridges

Question 4

When Earth’s magnetic poles change places.

Answer 4

magnetic reversal