How does continental crust compare to oceanic crust?

Continental crust is thicker and less dense

What occurs at a deep-ocean trench?

denser crust sinks into the asthenosphere

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Plate Tectonics

15 termsStudBud Administration628 plays

#Earth Science, #Plate Tectonics,#grade 8

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Questions 15

Answers

1
What happens at a transform boundary?
two plates separate
nothing happens
two plates slip past eachother
two pates collide
2
What physical layers make up the lithosphere?
crust, mantle and core
crust and core
mantle and core
crust and mantle
3
On which of Earth's physical layers do the tectonic plates float?
outer core
lithosphere
mesosphere
asthenosphere
4
Where does sea-floor spreading occur?
deep-ocean trenches
mid-ocean ridge
subduction zones
earthquake zones
5
Name for the single landmass scientists think existed 250 million years ago?
Lurasia
Gondwana
Pangaea
Eurasia
6
What process creates new ocean crust?
continental drift
plate tectonics
sea-floor spreading
global warming
7
Name the layer of Earth that is divided into tectonic plates.
mantle
lithosphere
crust
asthenosphere
8
How does continental crust compare to oceanic crust?
Continental crust is thinner and less dense
Continental crust is thicker and less dense
Continental crust is thinner and more dense
Continental crust is thicker and more dense
9
What type of evidence did Wegener have for his theory of continental drift?
all of the above
mountains in North America and Europe
paleoclimate data
fossils on Africa and South America
10
What theory explains how and why Earth's continents look the way they do today?
continental drift
global warming
plate tectonics
sea-floor spreading
11
What occurs at a deep-ocean trench?
strong earthquakes occur
denser crust sinks into the asthenosphere
underwater mountains form
two pieces of crust separate
12
What happens at a divergent boundary?
two plates collide
nothing happens
two plates slip past each other
two plates separate
13
What happens at a convergent boundary?
nothing happens
two plates slip past eachother
two plates collide
two plates separate
14
For which theory is Alfred Wegener known?
global warming
plate tectonics
sea-floor spreading
continental drift
15
Name the movements in the mantle that cause the tectonic plates to move.
convection currents
earthquakes
ridge push
slab pull

Plate Tectonics Flashcards | StudBud

Plate Tectonics

15 termsStudBud Administration628 plays

#Earth Science, #Plate Tectonics,#grade 8

Flashcards15 cardsFPractice quizPHost liveL

Questions 15

Answers

1
What happens at a transform boundary?
two plates separate
nothing happens
two plates slip past eachother
two pates collide
2
What physical layers make up the lithosphere?
crust, mantle and core
crust and core
mantle and core
crust and mantle
3
On which of Earth's physical layers do the tectonic plates float?
outer core
lithosphere
mesosphere
asthenosphere
4
Where does sea-floor spreading occur?
deep-ocean trenches
mid-ocean ridge
subduction zones
earthquake zones
5
Name for the single landmass scientists think existed 250 million years ago?
Lurasia
Gondwana
Pangaea
Eurasia
6
What process creates new ocean crust?
continental drift
plate tectonics
sea-floor spreading
global warming
7
Name the layer of Earth that is divided into tectonic plates.
mantle
lithosphere
crust
asthenosphere
8
How does continental crust compare to oceanic crust?
Continental crust is thinner and less dense
Continental crust is thicker and less dense
Continental crust is thinner and more dense
Continental crust is thicker and more dense
9
What type of evidence did Wegener have for his theory of continental drift?
all of the above
mountains in North America and Europe
paleoclimate data
fossils on Africa and South America
10
What theory explains how and why Earth's continents look the way they do today?
continental drift
global warming
plate tectonics
sea-floor spreading
11
What occurs at a deep-ocean trench?
strong earthquakes occur
denser crust sinks into the asthenosphere
underwater mountains form
two pieces of crust separate
12
What happens at a divergent boundary?
two plates collide
nothing happens
two plates slip past each other
two plates separate
13
What happens at a convergent boundary?
nothing happens
two plates slip past eachother
two plates collide
two plates separate
14
For which theory is Alfred Wegener known?
global warming
plate tectonics
sea-floor spreading
continental drift
15
Name the movements in the mantle that cause the tectonic plates to move.
convection currents
earthquakes
ridge push
slab pull