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Earth Science - Continental Drift, Sea Floor Spreading, Plate Tectonics Flashcards | StudBud
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Earth Science - Continental Drift, Sea Floor Spreading, Plate Tectonics
Earth Science - Continental Drift, Sea Floor Spreading, Plate Tectonics
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8th grade science
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Questions
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Answers
1
Which of the following is NOT evidence of Continental Drift?
sea floor spreading
Mountain ranges on S. America and Africa
Fossils on multiple continents
Coal in Europe and N. America
2
Which of the following provided evidence for sea-floor spreading?
volcanos
magnetic stripes
climate
fossils
3
What was that one super continent called?
Laurasia
Gondwanland
Pangaea
4
What's one thing scientists noticed when viewing the mid-ocean ridge?
plate tectonics
magma rising up
old crust
convection currents
5
What fossil was found on all 5 continents?
Mesosaurus
Plateosaurus
Rhynchosaur
Glossopteris
6
Why are Mesosaurus fossils a good type of evidence for Continental Drift?
They were organisms that lived a long time.
They were many types of fossils
They were organisms that could not swim over the ocean
They were very old
7
The Atlantic Ocean is expanding.
True
False
8
____ is a device that bounces sound waves off underwater objects and then records these echoes.
sea-floor spreading
subduction
sonar
seismograph
9
Alfred Wegener came up with the idea of...
earthquakes
sea floor spreading
continental drift
p waves
10
Subduction is....
process by which oceanic crust sinks beneath the trenches
a device that bounces sound wave off underwater objects
the direct transfer of heat through solids materials
the process that continually adds ocean floor
11
The densest layer in the Earth is?
inner core
mantle
outer core
crust
12
Which layer of the Earth is a liquid?
inner core
outer core
mantle
crust
13
With sea-floor spreading, the oldest layers of rock are near....
mid-ocean ridge
beaches
coastlines
trenches
14
The lithosphere is broken into sections called...
plates
continents
land
crust
15
The process by which the ocean floor sinks beneath a deep-ocean trench and back into the mantle
deep ocean trench
mid-ocean ridgw
sea-floor spreading
subduction
16
Why was Wegener's Theory Rejected?
He had no fossil evidence
He could not tell how the continents moved
He used incorrect evidence
People thought he was sick
17
_________ is an underwater mountain range where new ocean floor is produced.
deep ocean trench
continental drift
mid-ocean ridge
subduction
18
Where is new crust created?
coastlines
mid-ocean ridge
north pole
trenches
19
What was that hypothesis which stated that continents were once joined?
sea-floor spreading
plate tectonics
pangaea
continental drift
20
Why is the oldest ocean crust only 200 million years old?
it lies about its age
the core destroys it
aliens
old crust is melted into the mantle
