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Gen Sci Ch 31
Test Description: Plate tectonics
Instructions: Answer all questions to get your test result.
1) Isostacy is
A
the amount of matter in a set amount of space
B
the vertical movement of the crust
C
the process of magnetic reversal
D
the horizontal movement of the crust
2) Our knowledge of the core is based on
A
drilling directly into it
B
seismology
C
all of the above
D
studying hydrothermal vents
3) 4.6 billion years ago, Earth became sorted into density-based layers in the process of
A
differentiation
B
seafloor spreading
C
isostacy
D
magnetic reversal
4) Seafloor spreading was the hypothesis of
A
Albert Einstein
B
Harry Hess
C
Alfred Wegener
D
Alfred Nobel
5) Seafloor spreading is __ the rate of subduction.
A
less than
B
equal to
C
all of the above, depending on the time of year
D
greater than
6) The sinking of the oceanic lithosphere into the asthenosphere
A
plate tectonics
B
subduction
C
continental drift
D
isostacy
7) Which is not something that pushes seafloor apart?
A
radiation
B
convection
C
none of the above
D
gravity
8) Two plates moving past one another is a
A
transform boundary
B
impossibility
C
divergent boundary
D
convergent boundary
9) Which layer is NOT a layer based on composition?
A
core
B
lithosphere
C
crust
D
mantle
10) Meteorology is the study of
A
space
B
volcanoes
C
meteors
D
weather
11) Organisms in ocean trenches get energy from
A
nothing can live in ocean trenches
B
photosynthetic organisms
C
chemosynthetic organisms
D
the cold water
12) The innermost layer of Earth is
A
liquid
B
solid
13) The layer that is composed of the crust and the upper mantle
A
asthenosphere
B
lithosphere
C
mantust
D
crustle
14) the process by which new lithosphere is created at midocean ridges as older lithoshere moves away
A
divergent boundaries
B
convergent boundaries
C
transform boundaries
D
seafloor spreading
15) We are able to study the mantle by
A
all of the above
B
drilling directly through the crust and accessing the mantle
C
sampling molten rock from volcanic vents
D
observing Earth's magnetic field
16) Earth's innermost layer, which is mostly iron and includes the inner core and outer core
A
core
B
lower mantle
C
crust
D
asthenosphere
17) separate pieces of lithosphere that move on top of the asthenosphere
A
landbridges
B
mantles
C
density
D
tectonic plates
18) the study of the history, structure, and natural processes of planet Earth
A
high pressure
B
all of the above
C
darkness
D
very cold
19) What are conditions like in ocean trenches?
A
Life science
B
Earth science
C
astronomy
D
geography
20) What was not evidence of continental drift?
A
the continents look like they fit together like a puzzle
B
matching rock formations
C
the same kinds of fossils being found on several continents
D
landbridges
*select an answer for all questions
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