Ch.4 Section 2 Flashcards
1
Q
Continental Drift
A
the hypothesis that states tat the continents once formed a single landmass, broke up, and drifted to heir present locations
2
Q
Sea-floor spreading
A
the process by which new oceanic lithosphere forms as magma rises toward the surface and solidifies
3
Q
Magnetic reversal
A
when Earth’s magnetic poles change places, this is a magnetic reversal
4
Q
Magnetic minerals
A
parts of molten rock at mid-ocean ridges
5
Q
Fossils
A
items that provide evidence that the continents were once closer together
