What process drives mantle convection?

transfer of thermal energy from Earth's core to its surface

Which of the following resulted from the break-up of Pangaea?

NA, SA, Eurasia, Africa, Australia, Antarctica drifted apart

Why does the amount of oceanic crust in a tectonic plate change over time?

it is continually recycled into the mantle

Which of the following evidence best supports the theory of plate tectonics?

precise measurements of relative motions of pieces of crust

Which of the following observations about landforms best supports the theory of plate tectonics

mountain ranges appear continuous on opposite sides of ocean

What evidence did Wegener lack that would have better supported his continental drift theory?

mechanisms explaining how continents move over time

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spring eoc prep

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semester review #earthscience #platetec #plateboundaries #continentaldrift #seafloorspreading

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Questions 20

Answers

1
The Mid-Atlantic Ridge is an example of which type of boundary?
subduction zone
folded mountain
convergent
divergent
2
Tectonic plates slide horizontally past each other at which type of boundary?
convergent
transform
divergent
fault-block
3
What kind of tectonic plate boundaries are mid-ocean ridges?
all of these
convergent boundaries
transform boundaries
divergent boundaries
4
Generally speaking, tectonic plates push against each other at which type of boundary?
none of these
divergent
convergent
transform
5
What process drives mantle convection?
transfer of thermal energy from Earth's surface to its core
transfer of thermal energy from Earth's core to its surface
transfer of electromagnetic energy in from Earth's surface
transfer of radioactive materials out from Earth's interior
6
Which of the following resulted from the break-up of Pangaea?
Gondwana drifted from Baltica to form supercontinent
NA, SA, Eurasia, Africa, Australia, Antarctica drifted apart
Laurasia drifted apart from Gondwana to form supercontinent
two minor supercontinents were formed
7
Why does the amount of oceanic crust in a tectonic plate change over time?
the weight of the continents presses it into asthenosphere
erosion from continental crust forms new oceanic crust
the amount of oceanic crust does not change
it is continually recycled into the mantle
8
Generally speaking, tectonic plates move away from each other at which type of boundary?
divergent
oceanic transform
convergent
continental transform
9
Subduction zones occur at which type of boundary?
convergent
divergent
transform
spreading
10
Which of the following evidence best supports the theory of plate tectonics?
precise measurements of thickness of continental crust
precise measurements of relative motions of Earth's core
precise measurements of thickness of oceanic crust
precise measurements of relative motions of pieces of crust
11
Which statement explains how tectonic plate motion can affect the evolution of life on Earth?
motion of plates can alter environments
motions of plates can alter distribution of species
all of these
motions of plates can alter ocean currents
12
According to Continental Drift theory, 250 MYA all land on Earth formed what supercontinent?
Pangaea
Panthalassa
Laurasia
Gondwana
13
Plate tectonics is supported by
distribution of similar fossils across oceans
distribution of similar glacial features across oceans
distribution of similar landforms across oceans
all of these
14
Which is the main force acting on a convergent boundary?
compression
extension
lateral slip
shear
15
Deep sea trenches are associated with which of the following?
rift valleys
subduction zones
transform boundaries
fault-block mountains
16
Which of the following observations about landforms best supports the theory of plate tectonics
impact craters have been found on dry land and ocean floor
mountain ranges appear continuous on opposite sides of ocean
volcanoes are distributed randomly on every continent
as lava cools on Earth's surface, it forms igneous rocks
17
What evidence did Wegener lack that would have better supported his continental drift theory?
similar fossils/glacial deposits on opposite sides of oceans
mtn. ranges that appear to have been continuous now divided
up-to-date maps plotting continental coastlines
mechanisms explaining how continents move over time
18
Who proposed the theory of continental drift in 1915?
Alfred Wegener
Harry Hess
Galileo
Isaac Newton
19
What forms when all of the continents on Earth's surface merge into one massive landform?
a supercontinent
a Pangaea
a tectonic plate
a supercontinent cycle
20
What is the name of the process where new oceanic lithosphere forms at mid-ocean ridges?
slab pull
seafloor spreading
divergent boundary
ridge push

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