Module 5 Flashcards
1
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. rocks, fossils, climate
2
Q
- The youngest crust is found _________ the mid-ocean ridge.
A. far B. near C. beside D. away
A
B. near
3
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. shape of the continents
4
Q
- What discovery provided strong support for Continental Drift Theory?
A. Geology
C. Electromagnetism
B. Fossil evidence
D. Paleomagnetism
A
B. Fossil Evidence
5
Q
- Which is not evidence of seafloor spreading?
A. molten magma constantly erupting
C. fossil evidence
B. drilling samples of rock
D. magnetic stripes
A
C. Fossil evidence
6
Q
- The magnets point north when Earth’s magnetic field has __________.
A. magnetic reversal
C. mid-ocean ridge
B. reversed polarity
D. normal polarity
A
D. normal polarity
7
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. He cannot explain what causes the continents to drift.
8
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. They showed alternating bands of normal and reversed polarity.
9
Q
- What do you call the process that forms and moves new oceanic crust?
A. magnetic reversal C. convection
B. seafloor spreading D. trenching
A
B. seafloor spreading
10
Q
- What do you call the supercontinent landmass formed million years ago?
A. Pangaea C. Asia
B. Panthalassa D. Eurasia
A
A. Pangaea
11
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. 50 million years
12
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. The evidence from the rock layers in different continents exactly
matched.
13
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. Antarctica had once located near the equator.
14
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. Alfred Lothar Wegener
15
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. He realized that the Earth’s crust had been moving away on each side
of oceanic ridges, down the Atlantic and Pacific Oceans
16
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. Alfred Lothar Wegener
17
Q
- All continents were once joined together forming a supercontinent
called__________.
A. Panthalassa
B. Laurasia
C. Gondwanaland
D. Pangaea
A
D. Pangaea
18
Q
- It is possibly the most important fossil plant evidence that continents are
drifting.
A. Glossopteris C. Mesosaurus
B. Lystrosaurus D. Cynognathus
A
A. Glossopteris
19
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. continental fit, rocks, fossils, coal deposits, ancient climate, and glaciers
scars
20
Q
- What two specific continents fit together most noticeably?
A. Africa and North America
C. South America and Europe
B. South America and Africa
D. Antarctica and Africa
A
B. South America and Africa
21
Q
- What can you say about the ages of oceanic crust near and far from the midoceanic 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. Oceanic crust is younger near the ridge but older far from it.
22
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. Harry Hess
23
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. The sediments are thinner near the ridge but thicker as you go far from it.
24
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. Divergent Plate Boundary
25
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. Because older oceanic materials are pushed away and slowly consumed in
the subduction zone.
26
Q
- The idea proposed by Alfred Wegener to explain the continental shapes and
positions is known as _____.
A. Pangaea
C. Plate tectonics
B. Continental drift
D. Seafloor spreading
.
A
B. Continental drift
27
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. South America – Africa
28
Q
- In the Mid-1900s, scientists mapped mid-ocean ridges using what?
A. Satellites
B. Moons
C. Stars
D. Sonars
A
D. Sonars
29
Q
- Early observers thought continents might have been joined based on what
observation?
A. rocks and fossils C. magnetism .
B. earthquakes D. coastline
A
D. coastline
30
Q
- Wegener suggested that coal beds discovered in Antarctica indicated that this
continent was
A. once underwater.
C. always frozen.
B. once near the equator.
D. part of Africa
A
B. once near the equator.
31
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. 83.0 – 141.9 million year
32
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
C. 33.0 – 83.0 million years
B. 9.6 – 33.0 million years
D. 83.0 – 141.9 million years
A
D. 83.0 – 141.9 million years
33
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. he did not explain how continents move and what moves them.
34
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. Subduction zones
35
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. It gets larger
36
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.Africa was once in an area of the Earth that had a very cold climate.
37
Q
- Which of the following increases with distance from the mid-oceanic ridge?
A. The age of oceanic lithosphere.
C. The thickness of the lithosphere.
B. The density of oceanic lithosphere. D. All (A, B, & C)
A
D. All (A, B, & C)
38
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. hot and less dense material from below the Earth’s crust rises towards the
surface at the mid-oceanic ridge.
39
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 zone.
A
C. The rising of the materials from the ridge is faster than in the subduction
zone.
40
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. The magnetic reversal occurrence is supported by magnetic patterns in
magnetic rocks found on the ocean floor.
