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Plate Motion Review Flashcards | StudBud
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Plate Motion Review
Plate Motion Review
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Answers
1
Which of the following can happen at a convergent plate boundary?
Mountains forming
Voclanoes
One plate being melted/destroyed
Earthquakes
2
Why wasn't Alfred Wegener's theory of Continental Drift accepted at the time he proposed the theory?
He did not have any evidence.
He could not explain why the continents move.
The shape of some continents doesn't match up perfectly.
Fossils were found on continents separated by huge oceans.
3
Which of Earth's layers are solid?
Outer Core and Inner Core
Crust and Mantle
Crust and Inner Core
Inner Core and Mantle
4
What is the source of energy that causes all plate motion?
Earth's plates don't move so no energy is required.
The sun provided the energy for plate motion.
The Earth's core provides the energy for plate motion.
The Earth's asthenosphere provides the energy for plate motion
5
No matter where on Earth you drill, you will eventually find hard solid rock.
False
True
6
Earthquakes cause the plates to move.
False
True
7
Fossils of the same land animal are found on continents separated by an ocean. How could this happen?
The animal swam accross the ocean.
One of the continents was pushed under the other at a subduction zone.
The continents used to be connected but slowly moved apart on the mantle.
The two continents used to be connected. Then they floated apart on water.
8
Earth's plates move at a speed too slow for humans to experience the movement.
True
False
9
What is happening in the diagram below?
Plates are converging.
Plates are moving away from each other.
Plates are moving toward each other.
Plates are diverging.
10
Which image shows what you might find at the boundary of two plates that are moving away from each other?
C
D
B
A
11
It takes a VERY long time for Earth's plates to move long distances.
False
True
12
Plates move on the soft mantle which sometimes causes earthquakes.
True
False
13
Underneath Earth's plates you would find ________.
Water and sediment
The outer core
Fossils and sediment
Soft, solid rock.
14
At divergent plate boundaries rock rises from the mantle, hardens, and adds solid rock to the edges of
both
plates.
True
False
15
Which word(s) best describes the picture?
map view
quarter section
cross section
Half view
16
What is happening in the mantle that causes Earth's plates to move?
Earthquakes
Convection
Conduction
Radiation
17
Where would you most likely find hard solid rock if you drilled down?
Under the ocean
Both red and blue answers
None of the above
Under the land
18
What happens when two plates move apart from each other?
Volcanoes form creating one tall mountain.
Magma from under the plate comes up and adds new rock to both plates.
One plate slides under the other plate (subduction).
A big hole forms.
19
Since new crust is being created at diverging plate boundaries, the Earth is actually getting larger.
False
True
20
What does this image show us?
The west coast of America is a stupid place to live.
Earthquakes and volcanoes hare in random locations.
Earthquakes and volcanoes happen in the same areas.
Earthquakes are dangerous
21
If scientists drill down under the ocean, what would they find?
Fossils and sand
Rocks, then more water
Hard, solid rock
Sand and water
22
Why don't the edges of the continents line up perfect like a puzzle?
Erosion by wind, water, and ice has eroded some of the continent's edges.
Some continents sank beneath the ocean.
Some continents are brand new and don't fit the old ones.
Volcanic eruptions have added too much new land.
23
How much farther apart will Africa and South America be when you are 60 years old?
Less than 1 cm
About a mile
Around a meter
Maybe 20 meters
