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1. geology
A
the study of matter
B
the study of living things
C
the study of the rocks, processes, and history of Earth.
2. early 20th century hypothesis, made by Alfred Wegener, that the continents move about on Earth's surface.
A
sea floor spreading
B
continental drift
C
earthquakes
3. a deep gash in the seafloor; the deepest places on Earth.
A
trenches
B
mountains
C
volcanoes
4. the direction of the Earth's magnetic field; a compass today will point north, which is normal polarity; south is reversed.
A
compass
B
magnetic polarity
C
magnetometer
5. when the north and south magnetic poles are the same as they are now.
A
normal polarity
B
reverse polarity
C
direction
6. land mass above sea level.
A
ocean
B
continent
C
river
7. the movement of material due to differences in temperature.
A
conduction
B
convection
C
induction
8. the mechanism for moving continents; the formation of new seafloor at spreading ridges pushes lithospheric plates on the Earth's surface.
A
magnetism
B
continental drift
C
seafloor spreading
9. a magnetic mineral that takes on Earth's magnetic polarity as it crystallizes.
A
Gold
B
Magnetite
C
Lead
10. the crust that underlies the oceans; thinner and denser than continental crust.
A
continental crust
B
oceanic crust
C
island crust