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SOL Plate Tectonics Review Flashcards | StudBud
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SOL Plate Tectonics Review
SOL Plate Tectonics Review
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Review plate tectonics Earth science
Flashcards
25 cards
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Practice quiz
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Questions
25
Answers
1
What was Alfred Wegener's hypothesis about the continents.
The continents rest on plates that move slowly over time.
The continents were joined together and then drifted apart
Mountain ranges formed when continental plates collided.
There have always been 7 distinct continents.
2
Plates move apart from each other at a _________ boundary.
transform
divergent
subduction
convergent
3
Alfred Wegener supported his continental drift theory using evidence from...
Marie Tharp's mapping the ocean floor using sonar
landforms, fossils, and climate
landforms, fossils, and sea-floor spreading
fossil records and ocean floor mapping
4
What is a difference between old continental crust and new oceanic crust?
newer crust has magnetic striping caused
older crust is found under the continents
Continental crust is older, thinner and denser
Oceanic crust is newer, thinner and more dense
5
Sea-floor spreading happens when molten material rises __________________.
at the boundary of each plate
along mid-ocean ridges
from volcanoes on the continental crust
in the deep-ocean trenches
6
When the ocean floor sinks below continental plate forming a deep-ocean trench into the mantle?
convergent
subduction
divergent
transform
7
According to the plate tectonic theory, what drives the movement of the plates?
sea-floor spreading
the Earth's magnetic field
converging and diverging boundaries
convection currents in the mantle
8
What is a rift valley?
A mountain chain that rises up from the ocean floor.
A mountain range on the continental crust.
A deep underwater canyon.
A deep valley on the continental crust.
9
What did Wegener name the supercontinent he described?
Palermo
Pangrava
Pangea
Panini
10
What happens when two oceanic plates collide?
the oceanic plate slides beneath the continental plate
one bends under the other and causes a trench
they squeeze the crust upward into a mountain range
all options are possible
11
What is the rising of warm magma and the sinking of cooler magma inside the mantle known as?
plate tectonics
a convergent boundary
conduction
convection currents
12
The pattern of magnetic stripes on rocks is evidence for _______________.
Pangea (a supercontinent)
convection currents
continental drift
sea-floor spreading
13
What do you call the process where new material is continually added to the ocean floor?
sea-floor spreading
mountain range
mid-ocean ridge
deep-ocean trench
14
What do scientists believe causes the movement of the Earth's plates?
convection currents in the mantle
Earth's magnetic field
sea-floor spreading
seismic action
15
Why did most geologists of Wegener's time reject his hypothesis?
He couldn't explain what caused the continents to drift.
He had no evidence to support his hypothesis.
They did not like Wegener.
He couldn't explain the fossil records.
16
Plates that come together are called a _______ boundary.
transform
subduction
convergent
divergent
17
What happens when a continental plate and an oceanic plate collide?
one slides under the other forming a trench
Each of these could happen
they squeeze the crust upward forming a mountain
the oceanic plate slides under the continental plate
18
What device used sound waves to help map the mid-ocean ridges in the mid- 1900s?
seismograph
ridgeometer
laser
sonar
19
What is energy transfer that occurs in the oceans, atmosphere, and Earth's interior?
Pressure
Convection
Density
Gravity
20
When two pieces of continental crust collide at a converging boundary, a ______ is produced.
convergent boundary
mid-ocean ridge
rift valley
mountain range
21
Plates slip past each other along a _______ boundary.
convergent
divergent
transform
subduction
22
Oceanic crust near the mid-ocean ridge...
is not different from crust further from the ridge.
younger than crust further from the ridge.
contains more fossils than crust further from the ridge.
more wet than crust further from the ridge.
23
Theory that the continents slowly moved over the Earth's surface in the past?
continental drift
plate tectonics
divergent boundaries
supercontinental drift theory
24
What do you call a long chain of mountains that rise from the ocean floor?
mid-ocean ridge
deep-ocean trench
mountain range
sea-floor spreading
25
What happens when two continental plates collide?
the crust is squeezed upward into a mountain
each of these could happen
one slides under the other and forms a trench
the oceanic plate slides beneath the continental plate
