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Duplicate of Plate Tectonics Flashcards | StudBud
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Duplicate of Plate Tectonics
Duplicate of Plate Tectonics
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TEK 8.9A 8.9B. #platetectonics
Flashcards
32 cards
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Questions
32
Answers
1
Plates that come together are called a _______ boundary.
transform
subduction
convergent
divergent
2
According to the plate tectonic theory, what drives the movement of the plates?
sea-floor spreading
converging and diverging boundaries
convection currents in the mantle
the Earth's magnetic field
3
What happens when two oceanic plates collide?
all options are possible
they squeeze the crust upward into a mountain range
one bends under the other and causes a trench
the oceanic plate slides beneath the continental plate
4
What do you call the process where new material is continually added to the ocean floor?
mountain range
mid-ocean ridge
deep-ocean trench
sea-floor spreading
5
What is a rift valley?
A mountain chain that rises up from the ocean floor.
A deep underwater canyon.
A mountain range on the continental crust.
A deep valley on the continental crust.
6
Alfred Wegener supported his continental drift theory using evidence from...
landforms, fossils, and sea-floor spreading
Marie Tharp's mapping the ocean floor using sonar
fossil records and ocean floor mapping
landforms, fossils, and climate
7
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
8
When two pieces of continental crust collide at a converging boundary, a ______ is produced.
rift valley
convergent boundary
mid-ocean ridge
mountain range
9
The pattern of magnetic stripes on rocks is evidence for _______________.
Pangea (a supercontinent)
convection currents
continental drift
sea-floor spreading
10
What did Wegener name the supercontinent he described?
Pangea
Palermo
Panini
Pangrava
11
What happens when two continental plates collide?
each of these could happen
the crust is squeezed upward into a mountain
the oceanic plate slides beneath the continental plate
one slides under the other and forms a trench
12
Why did most geologists of Wegener's time reject his hypothesis?
He couldn't explain what caused the continents to drift.
He couldn't explain the fossil records.
He had no evidence to support his hypothesis.
They did not like Wegener.
13
What happens when a continental plate and an oceanic plate collide?
one slides under the other forming a trench
the oceanic plate slides under the continental plate
Each of these could happen
they squeeze the crust upward forming a mountain
14
Oceanic crust near the mid-ocean ridge...
contains more fossils than crust further from the ridge.
is not different from crust further from the ridge.
more wet than crust further from the ridge.
younger than crust further from the ridge.
15
What is the rising of warm magma and the sinking of cooler magma inside the mantle known as?
conduction
a convergent boundary
convection currents
plate tectonics
16
Plates move apart from each other at a _________ boundary.
subduction
divergent
transform
convergent
17
Which theory states that pieces of the Earth's lithosphere are in continuous, slow motion?
lithosphere movement theory
Pangea theory
plate tectonic theory
continental drift theory
18
What do you call a long chain of mountains that rise from the ocean floor?
mountain range
mid-ocean ridge
deep-ocean trench
sea-floor spreading
19
What do you call it when the oceanic crust bends downward?
sea-floor spreading
mid-ocean ridge
mountain range
deep-ocean trench
20
Just for fun...
I didn't know there were so many awesome science jokes!
I don't get it
good one!
funny!
21
What was Alfred Wegener's hypothesis about the continents.
Mountain ranges formed when continental plates collided.
The continents rest on plates that move slowly over time.
There have always been 7 distinct continents.
The continents were joined together and then drifted apart
22
A tropical plant fossil was found on an island in the Arctic.This is used as evidence for what?
A supercontinent once existed.
Sea-floor spreading.
The theory of plate tectonics.
continental drift changed the climate.
23
Plates slip past each other along a _______ boundary.
transform
subduction
convergent
divergent
24
This is funny, right?
Yes, it's funny!
I don't get it
I'm laughing too hard to choose an answer.
Hilarious- good one!
25
Which statement describes pillow lava?
Their formation happens during sea-floor spreading.
They are evidence of a young ocean floor.
All of these are true
They form when molten material hardens quickly under water.
26
What device used sound waves to help map the mid-ocean ridges in the mid- 1900s?
seismograph
ridgeometer
sonar
laser
27
What is a difference between old and new oceanic crust?
older crust is cooler and more dense
nothing
newer crust has magnetic striping
older crust is found under the continents
28
What is the idea that the continents slowly moved over the Earth's surface in the past?
continental drift
divergent boundaries
supercontinental drift theory
plate tectonics
29
What do you call it when the ocean floor sinks beneath a deep-ocean trench into the mantle?
convergent
transform
subduction
divergent
30
What is any trace of an ancient organism that has been preserved in a rock called?
fossil
continent
Pangea
rift
31
Sea-floor spreading happens when molten material rises __________________.
from volcanoes on the continental crust
along mid-ocean ridges
in the deep-ocean trenches
at the boundary of each plate
32
What is the name of the freshwater reptile that Wegener used as evidence for his hypothesis?
Glacialsaurus
Mesosaurus
Bob
Spitsbergen
