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Layers of the Earth
Layers of the Earth
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Layers of the Earth, Plate Tectonics, Volcano, Earthquakes and Sea floor Spreading
Flashcards
34 cards
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Questions
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Answers
1
The place where two tectonic plates collide is known as a
rift valley
divergent boundary
transform boundary
convergent boundary
2
A place where two lithospheric plates slide past each other is known as a
divergent boundary
rift valley
transform boundary
convergent boundary
3
Which processes are best explained by the theory of plate tectonics?
changes in air pressure
earthquakes and volcanic eruptions
life cycles of plants
food chain and webs
4
A dinosaur footprint in a rock is an example of a(n)
carbon film
trace fossil
amphibian
relative age
5
Which statement explains why tectonic plates move?
the weight of the oceans pressing on parts of Earth's surface
landforms cause them to move in different directions
they are slowly expanding and growing larger
Earth's interior is slowly cycling
6
Most scientist rejected Wegener's theory because it failed to explain
coal deposits in Antarctica
formation of mountains
how continents move
climate changes
7
The layer of the Earth made up largely of the rocks basalt and granite is the
asthenosphere
inner core
crust
outer core
8
Which is NOT true about the lithosphere?
is made of the crust and the top of the mantle
the lithosphere floats on the asthenosphere
continental crust is part of the lithosphere, oceanic isnt
Earth's plates are made of the lithosphere
9
What is the order (starting from the surface) of Earth's layers?
crust, outer core, inner core, mantle
mantle, outer core, inner core, crust
crust, mantle, outer core, inner core
outer core, inner core, crust, mantle
10
Earth's mantle is
a layer of molten rock
a layer of hot material-some rigid, some soft
a layer of molten metal
a dense ball of solid metal
11
Which of the following is NOT true about the mid-ocean ridge?
The mid-ocean ridge forms along a transform boundary
At the ridge, molten material rises to form new crust
The crust near the ridge is younger than the crust away
It's the longest mountain range in the world
12
Most geologists think that the movement of the Earth's lithospheric plates is caused by
subduction
gravity
convection currents in the asthenosphere
Earth's magnetic field
13
The lithosphere is broken into sections called
crust
subduction zone
boundaries
plates
14
The outer core is
made of solid rock
made of solid metal
made of liquid metal
hotter than the inner core
15
The process that powers plate tectonics is
convection
subduction
radiation
conduction
16
Which description is evidence of plate tectonics theory but doesn't suggest that the continents were once connected
similar land features on separated, present-day continents
thin layer of sediment covering the ocean floor, indicating it was young
interlocking of present-day coastlines, such as Africa and South America
matching rock layers on separate continents
17
The San Andreas Fault is an example of a
convergent boundary
divergent boundary
sea-floor spreading
transform boundary
18
The core is made of
rock
oxygen and hydrogen
iron and nickel
steel and aluminum
19
An eruption of thin, fluid lava would most likely be:
a quiet eruption
an explosive eruption
a cinder-cone eruption
a pyroclastic eruption
20
Which of these does not provide evidence that the continents drifted to their present location?
deep-ocean trenches
landform data
current weather
similar fossils on multiple continents
21
When the hanging wall of a fault splits down with respect to the footwall, the result is
normal fault
strike-slip fault
reverse fault
syncline
22
As depth beneath Earth's surface increases, temperature and pressure
stay the same
both increase
approach zero
both decrease
23
Subduction of the ocean floor takes place at
the lower mantle
rift valley
trenches
mid-ocean ridge
24
The layer of the upper mantle that can flow is the
asthenosphere
inner core
continental crust
lithosphere
25
The process by which the ocean floor sinks down through a deep-ocean trench into the mantle is
conduction
subduction
continental drift
convection
26
A collision of two tectonic plates containing continental crust produces a
mountain range
deep-ocean trench
mid-ocean ridge
rift valley
27
Which of these types of rocks would most likely be the youngest?
rock on an oceanic plate that is farthest from a mid-ocean ridge
rock on continental plate that is colliding with another continental plate
rock on an oceanic plate that is close to a mid-ocean ridge
rock on a continental plate that is next to a deep ocean trench
28
When a plate with oceanic crust collides into another plate with oceanic crust
one oceanic plate will go under the other oceanic plate
a rift valley forms
a mid-ocean ridge forms
a transform boundary occurs
29
What process adds new crust to the ocean floor along both sides of the mid-ocean ridge
continental drift
sea floor spreading
plate tectonics
convection currents
30
Which statement below is true?
the outer core is denser than the inner core
the inner core is denser than the outer core
the mantle is denser than the outer core
the crust is denser than the mantle
31
What is Pangaea
name of the supercontinent that existed millions yrs. ago
the name of a German scientist
another name for continental drift
the name of an ancient fossil
32
Earth's inner core is
a layer of rock that forms Earth's outer skin
a layer of molten metal
a layer of hot rock
a dense ball of solid metal
33
The geological theory that states pieces of Earth's lithosphere are in constant, slow motion
deep-ocean trenches
plate tectonics
sea-floor spreading
subduction
34
The mid-ocean ridge is
found only in the Pacific Ocean
the longest chain of mountains in the world
located mostly along coastlines
a long deep-ocean trench
