stud
bud
Sign up
Log in
Home
Library
Explore
SAT
More
Continental Drift and Sea-floor Spreading Flashcards | StudBud
Explore
/
Continental Drift and Sea-floor Spreading
Continental Drift and Sea-floor Spreading
16 terms
·
StudBud Administration
·
207 plays
Imported from external platform
Flashcards
16 cards
F
Practice quiz
P
Host live
L
Questions
16
Answers
1
The lithosphere is broken into different pieces called:
Trenches
Plates
Currents
Continents
2
Name the long mountain chain on the sea floor where Sea-floor Spreading takes place.
Great Rift Valley
Deep-Ocean Trench
Mid-Ocean Ridge
San Andreas Fault
3
Which of the following occurs because of convection currents?
The mantle increases in size.
Plates on the crust move.
Magma increases in temperature.
The density of magma increases.
4
Cool air __________________ and is ______________________ dense.
sinks, less
rises, more
rises, less
sinks, more
5
Which piece of evidence was
not
used to
originally
support the Theory of Continental Drift?
Sea-floor Spreading
Similar plant and animal fossils
Continents’ shape (puzzle pieces)
Similar Climate
6
Who proposed the Theory of Continental Drift?
Harry Hess
Henry Hess
Alfred Hitchcock
Alfred Wegener
7
Warm air _________________ and is ____________________ dense.
sinks, less
rises, less
rises, more
sinks, more
8
Which of the following causes convection currents to occur?
The core heats up magma & increases density, so it rises.
The core heats up magma & decreases density, so it rises.
9
What theory states that new ocean floor is constantly being created & recycled?
Convection Currents
Continental Drift
Sea-floor Spreading
Subduction
10
Who discovered Sea-floor Spreading and proved the mechanism for movement for Continental Drift?
Harry Hess
Alfred Hitchcock
Henry Hess
Alfred Wegener
11
Name the process where old ocean floor is recycled and melts back into the mantle.
Convection Currents
Sea-floor Spreading
Plate Tectonics
Subduction
12
Which of the following is true about Sea-floor Spreading?
The oceans are constantly getting bigger.
The amount of land on earth is constantly increasing.
The amount of land remains the same due to subduction.
13
Which of the following did Alfred Wegener's theory state?
All continents were once joined but then drifted apart.
There is a mid-ocean ridge creating new ocean floor.
Sea-floor spreading is causing the continents to drift.
Convection currents cause our continents to drift.
14
Which of the following would be the best analogy of the Sea-floor Spreading process?
Earthquake
Volcano
Roller Coaster
Conveyor Belt
15
The plates float on top of which layer?
Mantle
Crust
Asthenosphere
Lithosphere
16
What is the name for the feature on the ocean floor where subduction takes place?
Deep-Ocean Trench
Mid-Ocean Ridge
San Andreas Fault
Great Rift Valley
