Chapter 4 Section 2 Flashcards
1
Q
Continental Drift
A
The hypothesis that states that the continents once formed a single landmass, broke up, and drifted to their 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
