Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Science > Earth's Mechanism Nd Evidence Of Plate Movements > Flashcards

Earth's Mechanism Nd Evidence Of Plate Movements Flashcards

You may prefer our related Brainscape-certified flashcards:
Biology 101 flashcards
1
Q

A convection current is caused by differences in temperature resulting to variation in

A. air pressure

B. color

C. density

D. mass

A

A

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

It is a measure of how much mass there is in a volume of a substance.

A. volume

B. temperature

C. density

D. mass

A

A

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Hot molten materials in a convection cell rises near the

A. outer core

B. crust

C. inner core

D. mantle

A

D

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Which of the following theory explains how the heavy plates move along the different types of plate boundaries.

A. Continental Drift Theory

B. Plate tectonic Theory

C. Seafloor Spreading Theory

A

B

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

The motion of gas or liquid caused by differences in temperature is a

A. tectonic movement

B. plate tectonic

C. convection current

D. magma chamber

A

C

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

A driving force for plate motion at mid-ocean ridges as a result of the rigid lithosphere sliding down

A. slab pull

B. ridge push

C. convection current

D. seafloor spreading

A

B

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Lithospheric plates are flowing in this area.

A. inner core

B. asthenosphere

C. outer core

D. lithosphere

A

B

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Which of the following is NOT a method of heat transfer?

A. condensation

B. convection

D. radiation

C. conduction

A

A

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Which of the following is NOT a driving force of tectonic plates?

A. ridge push

B. slab push

C. drag force

D. mantle convection

A

C

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What is the source of heat in a mantle convection current?

A. the Sun

B. the crust

C. the core

D. the moon

A

C

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

A layer beneath where the less dense hot molten material rises, and sinks

A

Mantle

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

A soft, weak and plastic-like layer, the upper part of the mantle where lithospheric plates float and move.

A

Asthenosphere

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Hot molten rocks formed beneath the Earth’s surface.

A

Magma

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Facilitates the movement of the lithospheric plates.

A

Convection current

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

The innermost layer of the Earth, which generates heat to the mantle.

A

Core

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Which of the following DOES NOT describe a convection process?

A. the handle of a metal pot is hot while cooking

B. boiling of macaroni pasta

C. a sea breeze

D. ocean water in the surface is warmer

A

A

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Which of the following has a faster movement of molecules?

A. hot materials

B. warm materials

C. cold materials

D. room temperature materials

A

A

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Which of the following has a lesser density in a convection cell?

A. warm fluid materials

B. cold fluid materials

C. room temperature fluid materials

D. hot fluid materials

A

D

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

In a convection current, hot materials move

A. any direction

B. sideward

C. upward D. downward

A

C

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

The motion of gas or liquid caused by differences in temperature is a

A. tectonic movement

B. plate tectonic

C. convection current

D. magma chamber

A

C

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Which is not a geologic feature that occurs in the plate boundaries?

A. mountains

B. volcanoes

C. trenches

D. subduction

A

D

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

In which part of the innermost layer of the earth does convection current occur?

A. inner core

B. outer core

C. mantle

D. asthenosphere

A

C

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

Lithosphere at hot magma. boundary will uplift and tear apart due to rising

A. convergent

B. divergent

C. transform-fault

D. mantle

A

B

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

Older oceanic crust pushes down towards the zone. at the subduction

A. ridge

B. trench

C. fault

D. crack

A

B

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

What is the source of heat generated by the core to the mantle?

A. gases

B. decayed radioactive elements

C. molten rocks

D. molten metals.

A

B

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

What evidences do scientists use to support the Continental Drift Theory?

A. rocks, fossils, air

C. rocks, fossils, climate

B. rocks, water, ice

D. rocks, fossils, human beings

A

C

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

The youngest crust is found the mid-ocean ridge.

A. far

B. near

C. beside

D. away

A

B

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
28
Q

If you are a cartographer, what would give you an idea that the continents were once joined?

A. ocean depth

C. position of the South Pole

B. shape of the continents

D. size of the Atlantic Ocean

A

B

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
29
Q

What discovery provided strong support for Continental Drift Theory?

A. Geology

B. Fossil evidence

C. Electromagnetism

D. Paleomagnetism

A

B

30
Q

Which is not evidence of seafloor spreading?

A. molten magma constantly erupting

C. fossil evidence

A

C

31
Q

The magnets point north when Earth’s magnetic field has

A. magnetic reversal

B. reversed polarity

D. magnetic stripes

C. mid-ocean ridge

D. normal polarity

A

D

32
Q

Why was Alfred Wegener’s Continental Drift Theory not accepted immediately by the people during his time?

A. He cannot explain what causes the continents to drift.

B. He explains that South America and Africa fit together like a puzzle.

C. He described that the rocks and mountains at the edges of the continents were similar.

D. He explains that fossils of ancient plants such as “Glossopteris” can be found in almost all continents

A

A

33
Q

Why were magnetic patterns found on the ocean floor puzzling?

A. They did not show alternating bands of normal and reversed polarity.

B. They showed alternating bands of normal and reversed polarity.

C. No rocks were magnetic.

D. All rocks were magnetic.

A

B

34
Q

What do you call the process that forms and moves new oceanic crust?

A. magnetic reversal

B. seafloor spreading

C. convection

D. trenching

A

B

35
Q

What do you call the supercontinent landmass formed million years ago?

A. Pangaea

B. Panthalassa

C. Asia

D. Eurasia

A

A

36
Q

If Australia is moving about 2cm/ year and was drifted from the ridge by 1000km, how long ago was it when Australia was near the ridge?

A. 50 million years

C. 500 million years

B. 10 million years

D. cannot be predicted

A

A

37
Q

Which one among the continental drift pieces of evidence mainly proves that the Cape Mountains of South America and Africa line up perfectly before?

A. There’s an equal amount of coal deposits in each continent and fossils.

B. The evidence from the rock layers in different continents exactly matched.

C. The remains of the ancient plant called Glossopteris can be found on both continents.

D. The climate of the two continents is almost the same and with the same ancient organisms.

A

B

38
Q

What information can be derived about Antarctica having fossils of ancient plants and animals?

A. Antarctica drifted to the Southern hemisphere because of the melting of glaciers that traps the plants and animals.

B. Antarctica has a very nice climate that caused these organisms to migrate and stay..

C. It has a tropical climate today that provides a good environment for complex life forms.

D. Antarctica had once located near the equator.

A

D

39
Q

He is a German Scientist who hypothesized in 1912 that continents were once a giant landmass called Pangaea.

A. Harry Hammond Hess

C. Alfred Lothar Wegener

B. Robert Dietz

D. Charles Darwin

A

C

40
Q

What did Harry Hammond Hess realize in the 1950s when his team continued exploring the ocean floor and discovered the Mid-Atlantic Ridge?

A. He realized that the oceanic crust is older than the continental crust.

B. He realized that Alfred Wegener’s Continental Drift Theory is not true. C. He realized that the oceanic crusts near the Mid-Atlantic Ridge are thicker and less dense.

D. He realized that the Earth’s crust had been moving away on each side of oceanic ridges, down the Atlantic and Pacific Oceans.

A

D

41
Q

was a German polar researcher, geophysicist, and meteorologist

A

Alfred Lothar Wegener

42
Q

He is remembered the originator of the as Continental Drift Theory by hypothesizing in 1912 that the continents are slowly drifting around the Earth and is once a large landmass called Pangaea, a Greek word which means “All Earth.”

A

Alfred Lothar Wegener

43
Q

He was credited for the idea of Continental Drift Theory?

A. Alfred Lothar Wegener

C. Harry Hammond Hess

B. Charles Darwin

D. Robert Dietz

A

A

44
Q

All continents were once joined together forming a supercontinent called

A. Panthalassa

B. Laurasia

C. Gondwanaland

D. Pangaea

A

D

45
Q

It is possibly the most important fossil plant evidence that continents are drifting.

A. Glossopteris

C. Mesosaurus

B. Lystrosaurus

D. Cynognathus

A

A

46
Q

What are the evidence gathered by Alfred Wegener to support his Continental Drift Theory?

A. continental fit, rocks, fossils, coal deposits, ancient climate, and glaciers scars

B. the ancient climate of Antarctica and Africa

C. remains of dead plants and animals

D. observing the map

A

A

47
Q

What two specific continents fit together most noticeably?

A. Africa and North America

B. South America and Africa

C. South America and Europe

D. Antarctica and Africa

A

B

48
Q

What can you say about the ages of oceanic crust near and far from the mid- oceanic ridge?

A. Oceanic crust is younger near the ridge but older far from it. B. Oceanic crust is older near the ridge but younger far from it.

C. Oceanic crust materials have the same ages.

D. The Oceanic crust does not age.

A

A

49
Q

During World War II, he discovered and proposed that the origin of the plate would be at the mid-oceanic ridge.

A. Alfred Wegener

B. Harry Hess

C. Charles Darwin

D. Albert Einstein

A

B

50
Q

Describe the thickness of sediments near and far from the mid-oceanic ridge: A. The sediments are thinner near the ridge but thicker as you go far from it.

B. The sediments are thicker near the ridge but thinner as you go far from it.

C. The thickness of the oceanic sediments near and far from the ridge is the same.

D. The sediments are unevenly distributed.

A

A

51
Q

What type of plate boundary is occurring in the Mid-Atlantic Ridge?

A. Convergent Plate Boundary

B. Transform Fault Plate Boundary

C. Divergent Plate Boundary

D. Destructive Boundary

A

C

52
Q

Why is the Earth not getting bigger despite the fact that molten materials are gradually coming out from the mid-oceanic ridge?

A. Because everything is being consumed in the subduction zone.

B. Because of the faster rate of movement of materials from the ridge.

C. Because older oceanic materials are pushed away and slowly consumed in the subduction zone.

D. Because the rate of coming out of new oceanic materials and destruction of older oceanic crust are the same.

A

C

53
Q

The iron materials found in the seafloor can give information about the Earth’s magnetic field direction.
T or f

A

T

54
Q

The age of rocks that comes out and flow from each side of the oceanic ridge is equal.
T or f

A

T

55
Q

The magnetic polarity of the Earth remains normal and does not reverse or change.
T or f

A

F

56
Q

The average distance traveled by the materials from each side of the ridge is the same.
T or f

A

T

57
Q

A magnetic reversal happens many times in the past.
T or f

A

T

58
Q

The idea proposed by Alfred Wegener to explain the continental shapes and positions is known as

A. Pangaea

B. Continental drift
C. Plate tectonics
D seafloor spreading

A

B

59
Q

Examine the figure on the right, which two are the best examples of different continental positions in the past?

A. North America - South America

B. North America - Africa

C. South America - Asia

D. South America - Africa

A

D

60
Q

In the Mid-1900s, scientists mapped mid-ocean ridges using what?

A. Satellites

B. Moons

C. Stars

D. Sonars

A

D

61
Q

Early observers thought continents might have been joined based on what observation?

A. rocks and fossils

B. earthquakes

C. magnetism

D. coastline

A

D

62
Q

Wegener suggested that coal beds discovered in Antarctica indicated that this continent was
A. once underwater.

B. once near the equator.

C. always frozen.

D. part of Africa

A

B

63
Q

In the figure above, what is the age of the seafloor off of the Bahamas?

A. younger than 9.6 million years

C. 33.0-83.0 million years

B. 9.6-33.0 million years

D. 83.0 141.9 million year

A

D

64
Q

In the figure above, what is the approximate age of the seafloor off the north coast of Spain?

A. younger than 9.6 million years

B. 9.6-33.0 million years

C. 33.0 83.0 million years

D. 83.0 141.9 million years

A

D

65
Q

Peer scientists reviewing Wegener’s hypothesis of continental drift rejected his notion because_

A. his evidence was too few to make a valid conclusion.

B. he did not explain how continents move and what moves them.

C. his evidence was not clear in showing how continents were joined.

D. he lied by including false evidence.

A

B

66
Q

help explain why Earth is not getting any larger even though the

tectonic plates are always moving. A. Earthquakes

C. Subduction zones

B. Fossils

D. Volcanoes

A

C

67
Q

If there are MORE mid-ocean ridges than subduction zones, what happens to the ocean?

A. It gets larger.

C. It gets smaller.

B. It sinks.

D. Nothing will change.

A

A

68
Q

What do ancient glacier scars found in rock surfaces in Africa tells about its climate in the past?

A. The continents have not moved.

B. Africa has always been near the equator.

C. Africa was once in an area of the Earth that had a very cold climate.

D.Africa was once covered with ice sheets but did not move ever since.

A

C

69
Q

Which of the following increases with distance from the mid-oceanic ridge?

A. The age of oceanic lithosphere.

B. The density of oceanic lithosphere.

C. The thickness of the lithosphere.

D. All (A, B, & C)

A

D

70
Q

The Seafloor Spreading Theory states that

A. all continents are drifting.

B. ages of rocks near a ridge are older than the ones far from it.

C. fossils of plants and animals are found in almost all continents.

D. hot and less dense material from below the Earth’s crust rises towards the surface at the mid-oceanic ridge.

A

D

71
Q

What can you say about the rate of movement of materials coming out from the mid-oceanic ridge and the materials sinking in the subduction zone?

A. The rising of the materials from the ridge is slower than in the subduction

zone.

B. The movement of the materials in both ridge and subduction zone is the same.

C. The rising of the materials from the ridge is faster than in the subduction zone.

D. There is no much movement of materials happening in both the ridge and subduction

A

C

72
Q

What strong evidence discovered by our scientist that Earth’s magnetic reversal had been happening in the past?

A. The magnetic reversal occurrence is supported by magnetic patterns in magnetic rocks found on the ocean floor.

B. The ages of the rocks on the ocean floor are constantly changing.

C. The magnetic field of the Earth becomes weaker.

D. The Earth’s magnetic field is fluctuating.

A

A

Science (4 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions