Ch.4 Section 2

Question 1

Continental Drift

Answer 1

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

Question 2

Sea-floor spreading

Answer 2

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

Question 3

Magnetic reversal

Answer 3

when Earth’s magnetic poles change places, this is a magnetic reversal

Question 4

Magnetic minerals

Answer 4

parts of molten rock at mid-ocean ridges

Question 5

Fossils

Answer 5

items that provide evidence that the continents were once closer together