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Plate Tectonics
Plate Tectonics
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chapter 5 plate tectonics. 7th grade science. mrs. champion.
Flashcards
34 cards
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Practice quiz
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Questions
34
Answers
1
What do scientists believe causes the movement of the Earth's plates?
Earth's magnetic field
seismic action
convection currents in the mantle
sea-floor spreading
2
Alfred Wegener supported his continental drift theory using evidence from...
fossil records and ocean floor mapping
landforms, fossils, and sea-floor spreading
Marie Tharp's mapping the ocean floor using sonar
landforms, fossils, and climate
3
Does the hypothesis of a supercontinent (Pangea) contradict the Bible?
yes
no
Repeat the question
I don't know
4
This is funny, right?
Hilarious- good one!
I don't get it
I'm laughing too hard to choose an answer.
Yes, it's funny!
5
What device used sound waves to help map the mid-ocean ridges in the mid- 1900s?
ridgeometer
laser
seismograph
sonar
6
What happens when a continental plate and an oceanic plate collide?
the oceanic plate slides under the continental plate
one slides under the other forming a trench
they squeeze the crust upward forming a mountain
Each of these could happen
7
What is the name of the freshwater reptile that Wegener used as evidence for his hypothesis?
Mesosaurus
Glacialsaurus
Glossopteris
Spitsbergen
8
Plates move apart from each other at a _________ boundary.
divergent
transform
subduction
convergent
9
Which statement describes pillow lava?
They are evidence of a young ocean floor.
All of these are true
They form when molten material hardens quickly under water.
Their formation happens during sea-floor spreading.
10
What do you call it when the ocean floor sinks beneath a deep-ocean trench into the mantle?
divergent
transform
subduction
convergent
11
Oceanic crust near the mid-ocean ridge...
younger than crust further from the ridge.
more wet than crust further from the ridge.
is not different from crust further from the ridge.
contains more fossils than crust further from the ridge.
12
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
13
A tropical plant fossil was found on an island in the Arctic.This is used as evidence for what?
continental drift changed the climate.
Sea-floor spreading.
The theory of plate tectonics.
A supercontinent once existed.
14
What do you call the process where new material is continually added to the ocean floor?
deep-ocean trench
sea-floor spreading
mountain range
mid-ocean ridge
15
What do you call a long chain of mountains that rise from the ocean floor?
mid-ocean ridge
deep-ocean trench
sea-floor spreading
mountain range
16
Plates slip past each other along a _______ boundary.
subduction
transform
convergent
divergent
17
Just for fun...
good one!
I didn't know there were so many awesome science jokes!
funny!
I don't get it
18
According to the plate tectonic theory, what drives the movement of the plates?
converging and diverging boundaries
sea-floor spreading
the Earth's magnetic field
convection currents in the mantle
19
What is the rising of warm magma and the sinking of cooler magma inside the mantle known as?
a convergent boundary
plate tectonics
convection currents
conduction
20
What happens when two oceanic plates collide?
one bends under the other and causes a trench
all options are possible
the oceanic plate slides beneath the continental plate
they squeeze the crust upward into a mountain range
21
What is a difference between old and new oceanic crust?
nothing
older crust is found under the continents
newer crust has magnetic striping
older crust is cooler and more dense
22
What happens when two continental plates collide?
the crust is squeezed upward into a mountain
each of these could happen
the oceanic plate slides beneath the continental plate
one slides under the other and forms a trench
23
When two pieces of continental crust collide at a converging boundary, a ______ is produced.
rift valley
mountain range
mid-ocean ridge
convergent boundary
24
Which theory states that pieces of the Earth's lithosphere are in continuous, slow motion?
continental drift theory
lithosphere movement theory
Pangea theory
plate tectonic theory
25
Why did most geologists of Wegener's time reject his hypothesis?
They did not like Wegener.
He had no evidence to support his hypothesis.
He couldn't explain the fossil records.
He couldn't explain what caused the continents to drift.
26
What did Wegener name the supercontinent he described?
Palermo
Pangrava
Panini
Pangea
27
What was Alfred Wegener's hypothesis about the continents.
Mountain ranges formed when continental plates collided.
There have always been 7 distinct continents.
The continents rest on plates that move slowly over time.
The continents were joined together and then drifted apart
28
What is the idea that the continents slowly moved over the Earth's surface in the past?
plate tectonics
continental drift
supercontinental drift theory
divergent boundaries
29
Plates that come together are called a _______ boundary.
subduction
convergent
transform
divergent
30
The pattern of magnetic stripes on rocks is evidence for _______________.
Pangea (a supercontinent)
sea-floor spreading
convection currents
continental drift
31
What do you call it when the oceanic crust bends downward?
mountain range
deep-ocean trench
sea-floor spreading
mid-ocean ridge
32
What is any trace of an ancient organism that has been preserved in a rock called?
Pangea
fossil
rift
continent
33
What is the main problem with the plate tectonic theory from a Biblical worldview?
The fossil records.
The entire theory is problematic and not accepted.
The time in which it took plates to move in the past.
Using Earth's magnetic field as evidence.
34
What is a rift valley?
A deep underwater canyon.
A mountain chain that rises up from the ocean floor.
A mountain range on the continental crust.
A deep valley on the continental crust.
