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Layers Of The Earth And Plate Tectonics
Test Description: 6.E.2.1 and 6.E.2.2
Instructions: Answer all questions to get your test result.
1) 1. The earth is composed mainly of
A
metals
B
iron
C
water
D
rock
2) _________ of the Earth's surface is covered by water
A
75%
B
55%
C
85%
D
60%
3) Earth’s inner core is composed mainly of:
A
solid iron and nickel
B
heated gases
C
molten rock
D
rigid rock
4) The rotational motion of the Earth creates a dynamo effect where a force field is generated
A
true
B
false
5) Tectonic plates:
A
sometimes press against or pull away from each other
B
all of the above
C
sometimes scrape against each other
D
move very slowly
6) Earth’s outer layer is called the ________ :
A
crust
B
shell
C
mesosphere
D
outer plate
7) Mountains form where tectonic plates collide
A
true
B
false
8) Volcanic activity is related to tectonic plate movemen
A
true
B
false
9) Why do earthquakes occur near the San Andreas fault?
A
Portions of the plates get stuck and then suddenly loosen and move
B
One plate slowly pushes the other plate up.
C
One plate pushes hard enough to reverse the motion of the other plate
D
A trench is created as one plate slides under the other plate.
10) Which layer of Earth is divided into plates?
A
inner core
B
outer core
C
crust
D
mantle
11) Hot, molten rock deep below Earth’s surface is called:
A
parent rock
B
viscous rock
C
magma
D
lava
12) The solid outer layer of the Earth that consists of the crust and the rigid upper layer of the mantle is called the:
A
crust
B
lithosphere
C
asthenosphere
D
atmosphere
13) Which layer of the earth has convective currents?
A
crust
B
mantle
C
inner core
D
outer core
14) German scientist Alfred Wegener developed the hypothesis of:
A
continental drift
B
volcanism
C
seismology
D
oceanic drift
15) The Ring of Fire, a region with many active volcanoes, circles which ocean?
A
Atlantic
B
Indian
C
Pacific
D
Arctic
16) Which process best EXPLAINS the driving force behind tectonic plate movement?
A
continental drift
B
sea-floor spreading
C
seismology
D
viscosity
17) What causes the tectonic plates to move?
A
solar flares
B
the dynamo effect created in the core
C
electrical currents produced in the core
D
convection currents in the mantle
18) At a subduction zone, which plate would move down into the mantle?
A
oceanic plate
B
continental plate
19) Oceanic plates are thicker than continental plates
A
false
B
true
20) Mountains form where tectonic plates collide
A
false
B
true
*select an answer for all questions
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