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DM Drift and Boundaries
By Debra Wollard
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Last updated over 5 years ago
30 questions
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Who first proposed the theory of continental drift?
Wilson
Hess
Pangea
Wegener
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Question 14
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All are evidence to support the theory of continental drift EXCEPT
rainfall
land features
fossils
climate change
Question 16
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Rocks on the sea-floor that lie in a pattern, show a record of the reversals of
magnetic field
temperature
diversity
atmosphere
Sea-floor spreads apart at both sides of a _____ as new crust is added.
mid-ocean ridge
mountain
rift valley
trench
Drilling samples revealed that rock samples taken farther from a mid-ocean ridge are
younger
hotter
crystal
older
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Question 30
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What year did Wegener publish his book?
1957
1812
1912
1972
What was Wegener's theory called?
Rafting
Continental Drift
Expanding Earth
Plate Tectonics
What did Wegener's book have in it?
Ideas
Laws
Evidence
What were Wegner's 3 lines of evidence?
Rocks
Fossils
Weather
Animals
Climate
What were 2 of the fossils that Wegener used as part of his evidence?
Mesosaurus
T Rex
Glossoptris
Spinosaurus
What 2 places did they find tropical plant fossils that are currently covered in ice?
Africa
Greenland
Russia
Iceland
Antarctica
What did Wegener find in South Africa? (Read the whole page)
Deep scratches from glaciers
Glossopteris Fossils
Limestone
Mesosaurus Fossils
Fossils of tropical plants
Rocks from South America
What kind of rock was in both North America and Scotland?
Basalt
Granite
Limestone
Slate
What did Wegener name the supercontinent?
Eurasia
Laurentia
Gondwanaland
Pangaea
What was the main reason that most scientists rejected Wegener's hypothesis?
Because he was a meterorologist
Because he didn't have enough evidence
Because he couldn't tell them how it worked
Because he was annoying
When was this theory revisited?
1950's
1970's
1920's
2000's
What caused scientisit to revisit continental drift?
The war
New rocks
New technology
New fossils
What did sonar find on the ocean bottom?
Valleys
Plains
Mountains
Plateaus
What new technology did scientists use to map the bathymetry of the ocean floor?
Radar
Magnetometer
Echolocation
Sonar
What new information led to the expanding earth theory?
Subduction
Tectonic Plates
Seafloor Spreading
Plate Tectonics
When continental plates collide what landform is made?
Mountains
Trenches
Islands
A and B
All of the Above
Which type of plates go under other plates?
More dense and thick
Less Dense and thin
More dense and thin
Less Dense and thick
What mixes with rock to melt it?
Air
Silicon
Oil
Water
What causes the volcanoes on the ring of fire?
Consolidation
Rocking
Cooling
Upwelling
What is the example of a transform fault (where plates slide past each other)?
Mt. Ranier
Ring of Fire
Mt. St. Helens
San Andreas
How long has the earth's surface been shifting?
250 billion years
4.5 billion years
13.7 billion years
2.5 billion years
How many major plates are on Earth?
24
18
12
7
How fast do plates move?
1 cm/year
10 cm/year
8 cm/year
2.5 cm/year
What was the name of the giant landmass about 250 million years ago?
Gondwanaland
Columbia
Pangaea
Laurasia
What is the theory about crust moving called today?
continental drift
geography
plate tectonics
seismology
