stud
bud
Sign up
Log in
Home
Library
Explore
SAT
More
Continental Drift & Seafloor Spreading (2023) Flashcards | StudBud
Explore
/
Continental Drift & Seafloor Spreading (2023)
Continental Drift & Seafloor Spreading (2023)
20 terms
·
StudBud Administration
·
491 plays
Imported from external platform
Flashcards
20 cards
F
Practice quiz
P
Host live
L
Questions
20
Answers
1
What causes the seafloor to spread?
sinking magma from the mantle
earthquakes
rising magma from the mantle
drifting continental crust
2
New oceanic crust is created at mid-ocean ridges.
False
True
3
What is Pangaea?
the large landmass that all continents are currently forming
Earth's inner core
the largest fault found on Earth
large landmass in which all continents were once connected
4
Which of the following is NOT used as evidence for the existence of the supercontinent Pangaea?
Shark fossils were found in Antarctica
Folded mountains on coastlines
Glacial scratches on rocks in South Africa
Glossopertis fossils found across three continents
5
The oceanic crust near the mid-ocean ridge is younger than the oceanic crust farther away from the ridge.
False
True
6
What are mid-ocean ridges?
long chains of mountains that rise up from the sea floor
areas where crust pushes together
baseball seams
areas where crust bends into the mantle
7
What clue(s) supported the continental drift theory?
Fossils found on continents separated by oceans.
puzzle-like fit of all the continents
Similar rocks have been found on different continents
All of them
8
What device used sound waves to help map the mid-ocean ridges in the mid- 1900s?
seismograph
laser
ridgeometer
sonar
9
Why was "continental drift" rejected during Wegener's lifetime?
Wegener could not explain how the continents had moved
Wegener had no evidence for his hypothesis.
Wegener could not explain the Mesosaurus.
Wegener could not explain the Lystrosaurus.
10
Wegener’s hypothesis of continental drift was finally confirmed by
continental coastlines that fit together
the formation of mountain ranges such as the Andes
evidence supporting the idea of sea-floor spreading
fossils from the same reptile found on two continents
11
How did Marie Tharp significantly prove continental drift?
She engineered the first satellite.
She mapped the continents
She mapped the ocean floor
She invented Global Positioning Systems (GPS)
12
What cold environment feature was evidence to support the theory that the continents used to be joined?
Glacial grooves were found on different continents
Fossilized evidence of the same organism found on different continents
Africa and South America look like puzzle pieces that fit together
The same rocks were found on different continents
13
What was Alfred Wegener's hypothesis about the continents?
The continents rest on plates that move slowly over time
The continents were joined together and then drifted apart
Mountain ranges formed when continental plates collided.
There have always been 7 distinct continents.
14
Who developed the theory of seafloor spreading?
Charles Darwin
Harry Hess
Albert Einstein
Alfred Wegener
15
This map shows the age of the ocean floor rocks. Red represents...
old rocks at mid-ocean ridges
old rocks at trenches
young rocks at trenches
young rocks at mid-ocean ridges.
16
Why was "continental drift" rejected during Wegener's lifetime?
Wegener could not explain how the continents had moved
Wegener could not explain the Mesosaurus.
Wegener could not explain the Lystrosaurus.
Wegener had no evidence for his hypothesis.
17
How did the use of sonar help Marie Tharp & others map the ocean floor?
submarines took pictures
anchors were dropped off of ships to measure distance
sound waves were used to detect sea creature movement
sound waves were used to measure the distance to an object
18
Evidence for the theory of continental drift was first proposed in 1912 by what German Scientist?
Alfred Nobel
Alfred Hitchcock
Alfred Marshall
Alfred Wegener
19
What is happening at mid-ocean ridges?
plates are moving away and new ocean floor is formed
sea creatures are skiing down them
we still don't know
plates are moving towards each other and pushing up
20
What geologic feature was evidence to support the theory that the continents used to be joined?
Africa and South America look like puzzle pieces that fit together
Same rocks were found on different continents
Glacial grooves were found on different continents
Fossilized evidence of the same organism found on different continents
