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Unit 3 Practice- Alvarez
Unit 3 Practice- Alvarez
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Answers
1
At Mid-Ocean Ridges. . . . .
sea-floor spreading occurs.
oceanic lithosphere is destroyed.
tectonic plates are colliding.
the crust is older.
2
Mid-ocean Ridge
Convergent
Divergent
Transform
3
What is continental drift?
Any trace of an organism that has been preserved in rock
The idea that continents slowly moved over Earth’s surface
continents coming together
A super continent
4
The lithosphere can be ______ at plate boundaries.
Destroyed
All of these
Created
Nothing can happen
5
Convection currents occur in the ____________.
Inner Core
Lithosphere
Atmosphere
Mantle
6
What happens at a divergent tectonic plate boundary?
Plates pull away forming a rift or ridge
Plates move horizontal past one another
Plates collide with one another, causing mountains
Plates pull apart decreasing rock formation
7
Ocean plate to Continent plate is where volcanoes are created
False
True
8
Mountains and subduction zones can happen at convergent boundaries.
true
false
9
Determine the index fossil
B
C
D
A
10
How would you describe the Lithosphere?
Hot and increasing in pressure.
Hard and hot
Rigid, cold, and brittle.
Soft and bendable
11
The lithosphere is BELOW the asthenosphere
False
True
12
Evidence for continental drift includes how similar the coast line is of these two continents:
N. America and S. America
S. America and Africa
Australia and Antarctica
Africa and N. America
13
The edges of lithospheric plates are often defined by
ocean basins
frequent seismic activity
intercontinental plains
Earth's largest rivers
14
Which layer of the earth contains the asthenosphere?
Inner Core
Crust
Outer Core
Mantle
15
Transforming plates.......
Collide into each other
Are more than meets the eye
Slide past each other
Pull away from each other
16
Which fossil is considered an index fossil?
Turritella
Brachiopod
Ammonite
Trilobite
17
Evidence for continental drift hypothesis
matching rocks and structures
matching fossils
ancient climates
continental puzzle
18
The large pieces of crust that move due to convection currents in the mantle
China Plate
Seismic Plates
Tectonic Plates
Armor Plate
19
Seismic waves are...
Waves that produce sound
Vibrations that move through the earth
Waves that produce light
Vibrations that move through the sky
20
Which layer of the earth is responsible for the movement of the Earth's lithospheric plates?
Mantle
Outer Core
Inner core
Crust
21
The oldest rock layers are found
anywhere
on the bottom
in the middle
on top
22
Convergent boundaries create _________.
mountains
earthquakes
volcanoes
all of the above
23
Hot spots are ....
Constantly disappearing and reappearing
What creates earthquakes
What creates volcanoes
Always moving around
24
Convection currents in the mantle cause
hot magma to rise up and cool dense magma to sink down
freezing at the poles
warming at the equator
cooler magma to rise up and warmer magma to sink down
25
Fossil evidence found on different continents suggests that ...
dinosaurs swam across the ocean
continents were once attached
26
An earthquake’s epicenter is located directly above its
seismic station
focus
moment magnitude
tsunami
27
Matching fossil evidence from different continents can provide evidence
for seafloor spreading
for Wegener's theory of continental drift
that oceans were once higher than mountaintops
of magnetic reversals in rock
28
The asthenosphere is made up of
the plastic-like part of the mantle
the crust
the mantle and inner core
the oceanic crust
29
Which describes the relationship between earthquakes and volcanoes?
Volcanic eruptions usually cause severe earthquakes.
Earthquakes and volcanoes are not related in any way.
Earthquakes & volcanoes often are located where plates meet.
Earthquakes usually cause volcanoes to erupt.
30
This is the upper mantle below the lithosphere and is where convection occurs
mesosphere
lithosphere
asthenosphere
atmosphere
31
Earthquakes can happen far off the coast. What can also happen with this type of earthquake?
tsunami
thunderstorm
global warming
volcano
32
mid-ocean ridges are.....
formed from two plates moving away and molten rock hardens
formed from volcanic action
trenches where one plates moves down & the other moves up
formed from two plates coming together
33
The process where 1 tectonic plate bends & slides beneath another plate at a convergent boundary
subduction
conduction
abduction
rubber duction
34
Rock layers below are _____ rock layers above.
the same age as
either older or younger than
younger than
older than
35
This is strong evidence supporting the continental drift
fossils
oceans
pyramids
sediments
36
Convection currents in the mantle are caused by differences in what?
Mass
Temperature and Density
Size
Composition
37
What is the result of transforming plates?
all of the above
earthquakes
ocean floor
mountains
38
What drives continental drift?
Convection Currents
Gravity Shifting
Earthquakes
Oil
39
What is a device that measures seismic waves?
Seismograph
Moment Magnitude
Seismogram
Richter Scale
40
Rocks found along divergent boundaries are youngest away from the plate boundary
True - rocks are younger as you move away from the boundary
False - rocks are younger closer to the boundary
41
The lithosphere is broken up into the _________
rock cycle
asthenosphere
continents
tectonic plates
42
Where is the focus of the earthquake located?
the line labeled C
point A
point B
the circles labeled D
