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Earth structure Review Flashcards | StudBud
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Earth structure Review
Earth structure Review
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1
When rock layers are stretched apart at divergent boundaries, this is called...
Tension
Compression
Subduction
Folding
2
The Ring of Fire, a region with many active volcanoes, circles which ocean?
Pacific
Indian
Atlantic
Arctic
3
Tectonic plates :
sometimes press against or pull away from each other
move very slowly
all of the above
sometimes scrape against each other
4
Which layer of the earth is the convective layer?
outer core
inner core
crust
mantle
5
The molten, fluid rock that issues from a volcano or volcanic vent is called ____________?
Magma
Lava
Fissure
pahoehoe
6
The outer most layer of the Earth is called the
shell
crust
mesosphere
outer plate
7
The place on the Earth's surface where an earthquake's energy is highest is known as the:
Fault scarp
Focus
Focal point
Epicenter
8
vibrations that travel through Earth carrying the energy released during an earthquake
earthquake
earthquake in subduction zone
seismic waves
plates
9
An earthquake is related to a crack in the crust called....
Crevasse
Fault
Fracture
Splinter
10
Which process best EXPLAINS the driving force behind tectonic plate movement?
continental drift
viscosity
sea-floor spreading
seismology
11
What is the area where two tectonic plates meet called?
a mid-ocean ridge
a collision
a rift zone
a boundary
12
This is the amount of energy released during an earthquake while the ground is shaking.
Intensity
Magnitude
13
Which layer of the earth is divided up into 'plates'?
Crust
Mantle
Inner Core
Outer Core
14
What are tectonic plates?
pieces of Earth's lithosphere
parts of Earth's continents
portions of Earth's mountains
sections of Earth's oceans
15
The point where earthquake energy is released during an earthquake
focus
fault scarp
fault
epicenter
16
__________ of the earth's surface is covered by water.
60%
85%
75%
95%
17
The waves generated by an earthquake are mechanical waves.
True
False
18
Large waves generated in the ocean by an earthquake, landslide, or volcanic activity are called
false
true
19
Seismologists study earthquakes by reading
pedometer
seismographs
speedometer
oilergraphs
20
What causes tectonic plates to move?
solar flares
electric currents produced in the core
convection in the Earth's asthenosphere of the mantle
the dynamo effect created in the core
21
Seismologists study?
volcanic activity
Earthquakes
ocean tides
mountain side erosion
22
Hot, molten rock that flows from a volcano is called lava.
False
True
23
Hot molten rock deep below the Earth's surface is
magma
parent rock
lava
vicious rock
24
Earth's inner core is made mainly of...
all of the above
solid iron and nickel
molten rock
heated gases
25
Waves generated by an earthquake are mechanical waves
True
False
26
The earth is composed mainly of...
iron
metals
water
rock
27
Where are volcanoes most likely to form?
along bodies of water
along plate boundaries
center of continents
in mountainous areas
28
The rotational motion of the earth creates a dynamo effect where a magnetic force field is created.
True
False
29
Mountains form where tectonic plates collide.
False
True
30
During an earthquake, energy is released into the earth.
False
True
31
Earth's inner core is suspended in...
liquid iron and nickel
all of the above
solid nickel and copper
heated gases
32
The point on the Earth's surface that is directly above where an earthquake begins.
Epicenter
Fault
Boundary
Hypocenter
33
German scientists Alfred Wegener developed the hypothesis of...
continental drift theory
oceanic crust
seismology
volcanism
34
Most of the world's great mountain ranges occur near ____________ boundaries?
Transform
Convergent
Divergent
Fault
35
Seismologists study volcanic activity
False
True
36
Volcanic activity is related to tectonic plate movement.
False
True
37
The solid outer layer of the earth that consists of the crust and the rigid upper layer of the mantle is called the..
aesthenosphere
oceanic crust
trophosphere
lithosphere
