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Plate Motion 2.6 Flashcards | StudBud
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Plate Motion 2.6
Plate Motion 2.6
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Review for Plate Motion Critical juncture
Flashcards
31 cards
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Practice quiz
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Questions
31
Answers
1
Subduction zones have
rift valleys
folded mountains
ridges
volcanoes
2
Why is the Atlantic Ocean growing?
It has a trench.
It has a subduction zone.
It has a convergent plate boundary.
It has seafloor spreading/ divergent plate boundary.
3
What plate boundary do 2 plates crash into each other & one plate sinks below the mantle?
Sea floor spreading
Convergent
Mid-ocean ridge
Divergent
4
Which statement best describes Earth's
outer layer
underneath the surface in the image?
rock under soil & sand under the ocean
rock under soil & mud under ocean
the soil & ocean has sand & water under
rock under soil & ocean
5
Which fossils provide the best evidence for plate tectonics?
All fossils provide evidenece
A, B, & C
NO fossils provide evidence
D, E, & F
6
Volcanoes are red & earthquakes are black, what does this pattern show?
They happen at plate boundaries
patterns don't exist in Geology
it is a random pattern
earthquakes & volcanoes happen at the same place
7
India wasn't always connected to Asia. They are parts of different plates. How did India come to be part of Asia?
floated into each other across the ocean.
they hit each other & broke
one plate went under into the mantle
pushed into each other by earthquakes
8
Which is the correct description of what happens when plates move toward each other?
2 plates hitting & breaking into pieces
1 plate sinks into the mantle
the plate edges bend up
1 plate sinks into the ocean below
9
Which fossils provide evidence to the existence of Pangaea?
No fossils provide evidence
E, F, & G
All fossils provide evidence
A, B, & C
10
Which best explains the discovery of fern fossils on Antarctica a frozen continent today?
Newtons Laws
Continental drift
evolution
climate change
11
If two continents are moving away from each other, they must have a ________ plate boundary.
transverse
divergent
transform
convergent
12
What did Harry Hess discover at Seafloor spreading?
Older rock where two plates are dividing
younger rock where two plates are dividing
It is a random pattern of older & younger rock
Older as it gets further away from the mid-ocean ridge
13
What is the plate boundary where two plates separate and magma oozes up forming new rock?
Trenches
Divergent
Convergent
Transform
14
Fossils of the same species of plant have been found in South America & Africa; what does this suggest?
The plant fossils drifted across the ocean
The 2 continents must have been connected at one time
They must be different type of plants that look identical
The plants evolved to live on both Africa & South America
15
What happens at mid-ocean ridges?
subducton (earth pushed down into the mantle)
converging of rock
Plates are diverging here due to new rock created
Ocean floor is recycled in the mantle here
16
If we drill down in Italy and the Mediterranean Sea, where will we find hard solid rock?
Under Italy, but not the Mediterranean Sea
Under both places
neither places
Under the Mediterranean sea, but not Italy
17
How could similar (age/type) rock found in USA & Portugal get so far apart?
new plates got added between them
new rock got added between them
rising sea levels
subduction
18
What is Earth's outer layer made of?
water
sand and water
rock on continents & sand on the ocean
rock under both continents & oceans
19
If two continents are moving towards each other, they must have a ________ plate boundary.
convergent
transform
divergent
transverse
20
What happens at a subduction zone?
Continental plate dives into the mantle under oceanic plate
Magma rises up where two plates separate
Oceanic plate dives into the mantle under continental plate
2 plates slide past each other
21
Which best describes what happens when Earth's plates move away from each other?
Ocean water fills the gap
A new plate comes up from underneath
Soft rock under plates rise & harden
sand & dirt fills the gap in the middle
22
Explain similar rocks in USA & N.Africa. The rocks were formed at the same time & have the same material.
floated away on the ocean
pushed apart by earthquakes
new plates got added between them
new rock got added between them
23
A trench is a
Divergent plate boundary
rifting plate boundary
Convergent plate boundary
transform plate boundary
24
Why is Los Angeles slowly moving closer to San Francisco due to 2 plates slipping past each other?
Convergent plate boundary
Subduction zone
Transform/transverse plate boundary
Divergent plate boundary
25
What would explain similar rock found on North America & Eurasia?
The rock drifted across the ocean
They were once connected
The rock formed separately
Water dwelling animals carried the rock across the ocean
26
Why is the Pacific ocean shrinking?
It has a subduction zone
It is shrinking at the San Andreas fault
It has a convergent plate boundary
It has a mid-ocean ridge
27
What happens at transform/transverse plate boundaries?
Nothing happens
2 plates slide past each other
One plate dives under the other in subduction
New rock gets added at the edges of each plate
28
How did Mesosaurus fossils get on BOTH South America & Africa?
S America & Africa have a convergent boundary
they swam across
Their bones drifted across the ocean
S America & Africa have a divergent boundary
29
A mid ocean ridge is a
transform plate boundary
convergent plate boundary
divergent plate boundary
transverse plate boundary
30
Which continent would most likely have similar rock sequences to Eurasia?
Australia
Antarctica
Africa
North America
31
Which statement best describes Earth's outer layer under the surface of the image?
Under the soil, Earth's outer layer is water
under soil & ocean is hard solid rock
under soil is rock, under ocean is sand
Under both soil & ocean, is sand & water
