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Earth Science: Lesson 2 Quiz Flashcards

(58 cards)

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1
Q

Lithosphere broken into tectonic plates

A

Plate Tectonics Theory

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2
Q

How many plates are there?

A

7 major and many minor plates

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3
Q

These plates are above a weak layer called _____________

A

Asthenosphere

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4
Q

What are the 7 major plates?

A
  • African
  • Antarctic
  • Eurasian
  • North American
  • South American
  • India-Australian
  • Pacific Plates
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5
Q

What are the 3 types of plate boundaries?

A
  • Divergent
  • Convergent
  • Transform Fault
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6
Q

What is the largest plate?

A

Pacific Plates

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7
Q

What occurs when 2 plates move apart?

A

Divergent Plate Boundary

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8
Q

Why does 2 plates move apart in divergent plate boundary?

A

due to upwelling of material from mantle

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9
Q

What plates are evident in divergent plate boundary?

A
  • North American
  • Eurasian
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10
Q

What are the 3 examples/types of divergent plate boundaries?

A
  • Oceanic Ridge
  • Rift Valley
  • Continental Rifts
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11
Q

Rift valley is also known as?

A

Grabens

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12
Q

What do you call an underwater mountain ridge formed through uplifting of ocean floor due to convection currents rising in mantle (magma rising)?

A

Oceanic Ridge

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13
Q

What is an example of Oceanic Ridge?

A

Mid-Oceanic Ridge

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14
Q

What do you call a space found between highlands and/or mountain ranges?

A

Rift Valley

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15
Q

What is an example of Rift Valley?

A

East African Rift Valley

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16
Q

What do you call the two or more small segments found in single landmass?

A

Continental Rifts

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17
Q

What is an example of Continental Rifts?

A

Iceland

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18
Q

What is formed when two plates collide?

A

Convergent Plate Boundary

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19
Q

How is convergent plate boundary possible?

A

because of the subduction zone

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20
Q

What do you call when oceanic plate descends in the mantle under the second plate (either continental plate or oceanic plate)?

A

Subduction Zone

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21
Q

What are the 3 types of convergent plate boundaries?

A
  • Oceanic-Continental
  • Oceanic-Oceanic
  • Continental-Continental
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22
Q

Subduction of oceanic plate under continental plate and sinks into asthenosphere

A

Oceanic-Continental

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23
Q

What does Oceanic-Continental form?

A

Continental Volcanic Arcs

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24
Q

What are some examples of plates that converge to one another?

Study These Flashcards
A

Nazca and South American Plates

25
What are the examples of Oceanic-Continental?
- Andres - Cascades - Sierra Mountain
26
What do you call when 2 oceanic plates converge in which one descend beneath the other?
Oceanic-Oceanic
27
What does Oceanic-Oceanic form?
Volcanoes on Ocean Floor
28
What does Oceanic-Oceanic lead to?
Earthquakes and Tsunamis
29
What are examples of Oceanic-Oceanic?
- Aleutian - Mariana - Tonga
30
What do you call the collision of 2 continental plates and one subducts the other
Continental-Continental
31
What does Continental-Continental create?
Mountain Ranges and possible shallow Earthquake Activities
32
What are some examples of plates that collide?
North American and Pacific Plates
33
What is an example of Continental-Continental?
Himalayas
34
Two plates slide past parallel to each other
Transform Fault Boundary
35
What does transform fault boundary lead to?
Formation of Earthquakes
36
What is an examples of Transform Fault Boundary?
San Andreas Fault
37
What are the 4 Evidences of Plate Tectonics Theory?
- Convection Current - Slab-Pull - Ridge-Push - Mantle Plumes
38
What is the driving force for plate movement in which motion of matter results from changes in temperature?
Convection Current
39
What is the mechanism that oceanic plate sinks and pulls lithosphere along?
Slab-Pull
40
What do you call the influence of gravity that pulls oceanic plates to slide down?
Ridge-Push
41
What do you call the hot materials ascending toward the surface?
Mantle Plumes
42
What causes change in temperature that make plates move?
unequal distribution of heat underneath
43
Continental drift theory is proposed by?
Alfred Wegener
44
Who proposed a hypothesis?
Alfred Wegener
45
Continents formed single supercontinent called Pangaea
Continental Drift Theory
46
What does Pangaea mean?
all land
47
What began to break apart 200 million years ago?
Pangaea
48
Continents fit together like pieces of jigsaw puzzle
Fit of Continental Shorelines
49
Scratches in surfaces of continents indicate existence of glaciers
Distribution of Glacial Sediments
50
Rocks underwent climatic regime
Paleoclimate
51
Similar fossils found in several continents
Distribution of Fossils
52
Similar types, age, and sequence of layers of rocks
Distribution of Rocks
53
How many evidences of continental drift theory are there?
5
54
What are the 5 evidences of continental drift theory?
- Fit of Continental Shorelines - Distribution of Glacial Sediments - Paleoclimate - Distribution of Fossils - Distribution of Rocks
55
What are some examples of Fit of Continental Shorelines
- East Coast of South America - West Coast of Africa
56
What is the strongest evidence of continental drift theory?
Distribution of Fossils
57
What is an example of similar fossils found in several continents?
Lystrosaurus
58
What is the major problems of continental drift theory?
Alfred Wegener didn't give explanation how continents drifted away

Reviewer (12 decks)

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