science 4.2

Question 1

pangae

Answer 1

used to be only one continent

Question 2

continental drift

Answer 2

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

Question 3

mid ocean ridge

Answer 3

are places where sea floor spreading takes place

Question 4

magnetic reversal

Answer 4

when earths magnetic poles change places

Question 5

sea floor spreading

Answer 5

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