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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
rock
B
water
C
iron
D
metals
2) _________ of the Earth's surface is covered by water
A
60%
B
55%
C
85%
D
75%
3) Earth’s inner core is composed mainly of:
A
solid iron and nickel
B
rigid rock
C
heated gases
D
molten 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 scrape against each other
B
move very slowly
C
sometimes press against or pull away from each other
D
all of the above
6) Earth’s outer layer is called the ________ :
A
crust
B
outer plate
C
mesosphere
D
shell
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
A trench is created as one plate slides under the other plate.
B
One plate pushes hard enough to reverse the motion of the other plate
C
One plate slowly pushes the other plate up.
D
Portions of the plates get stuck and then suddenly loosen and move
10) Which layer of Earth is divided into plates?
A
outer core
B
inner core
C
crust
D
mantle
11) Hot, molten rock deep below Earth’s surface is called:
A
lava
B
parent rock
C
magma
D
viscous rock
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
asthenosphere
C
atmosphere
D
lithosphere
13) Which layer of the earth has convective currents?
A
crust
B
outer core
C
mantle
D
inner core
14) German scientist Alfred Wegener developed the hypothesis of:
A
volcanism
B
continental drift
C
seismology
D
oceanic drift
15) The Ring of Fire, a region with many active volcanoes, circles which ocean?
A
Arctic
B
Indian
C
Pacific
D
Atlantic
16) Which process best EXPLAINS the driving force behind tectonic plate movement?
A
seismology
B
viscosity
C
continental drift
D
sea-floor spreading
17) What causes the tectonic plates to move?
A
convection currents in the mantle
B
the dynamo effect created in the core
C
solar flares
D
electrical currents produced in the core
18) At a subduction zone, which plate would move down into the mantle?
A
continental plate
B
oceanic 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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