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