science flash cards
1
Q
hypothesis that continents are in constant motion
A
continental drift
2
Q
naturally preserved remains,imprints, or traces of organisms
A
fossil
3
Q
middle layer of earth situated between the crust above and the core below
A
mantle
4
Q
Ancient supercontinent composed of land that fors today’s continents
A
pangaea
5
Q
event in which the magnetic field reverses direction
A
magnetic reversal
6
Q
mountain range located on the seafloor in the middle of the ocean
A
mid-ocean ridge
7
Q
conforming to a type, standard, or regular pattern
A
normal
8
Q
today,s magnetic field magnet orient themselves to point north
A
normal polarity
9
Q
magnetic field in which magnets orient themselves to point south
A
reversed polarity
10
Q
new oceanic crust forms at a mid-ocean ridge as old oceanic crust moves away
A
seafloor spreading
