science 4.2 Flashcards
1
Q
the hypothesis that states that the continents once formed a single landmass, broke up, and drifted to their present locations
A
continental drift
2
Q
continents were once joined to make a single huge continent and is Greek for ‘’ all earth ‘’
A
Pangaea
3
Q
places where sea floor spreading takes place
A
Mid-ocean ridges
4
Q
the process by which new oceanic lithosphere forms as magma rises toward the surface and solidifies
A
sea- floor spreading
5
Q
When Earth’s magnetic poles change places
A
magnetic reversal
6
Q
evidence that sea floor spreading comes from
A
magnetic reversal on ocean floor
7
Q
items that provide evidence that the continents were once closer together
A
fossils
