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Plate Tectonics Flashcards | StudBud
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Plate Tectonics
Plate Tectonics
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#platetectonics
Flashcards
24 cards
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Questions
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Answers
1
When tension in the Earth's crust is suddenly released, it causes...
an eruption
a cyclone
a tornado
an earthquake
2
What happens to the temp and density of the material between points D and A?
temp decreases and density increases
temp increases and density decreases
Temp and density increase
temp and density decrease
3
Why is the distance between Europe and North America increasing by a few centimeters each year?
Due to weathering and erosion
The ice caps are melting
An increase in hurricanes
New oceanic crust is being created at a mid-ocean ridge
4
Earthquakes most often occur at
Along plate boundaries
The San Andreas Fault
The New Madrid fault
at night
5
What evidence did NOT help support the idea of continental drift?
similar human fossils on various continents
similar land mass features such as mountain ranges
similar plant & animal fossils on different continents
similar rock types on different continents
6
Where on the diagram would you expect to find the oldest oceanic crust?
A
Not enough info given
B
C
7
Which of the following statements about Earth's outer core is NOT true?
It provides heat to drive convection
It is a liquid
It is made of solid metal
It contains iron and nickel
8
Scientists rejected Wegener's theory because he could not...
Describe the climate of Pangaea
Describe how seeds moved from Africa to South America
Explain why continental crust was more dense
Explain the force that pushes or pulls continents
9
What process is shown occurring at C?
Continental Collision
Seafloor spreading
Subduction
10
India and Australia move in different directions. What type of boundary will form?
Convergent
Divergent
Transform
11
What type of data have scientists analyzed to help them develop their theory of Earth's layers?
geologic time scale
fossils
weathering and erosion
seismic waves of earthquakes
12
What will happen to convection in the mantle if Earth's interior cools down completely?
There will be no change.
Convection will decrease then stop
Convection will flow in the opposite direction
Convection will increase
13
During convection cooler, denser magma would...
stay where it is
rise to the top
sink to the bottom
14
The point at which an EQ occurs is called the __, while the point on the surface is the
focus; epicenter
magnitude; intensity
normal fault; reverse fault
epicenter; focus
15
When plates slide past one another in opposite directions, like the San Andreas fault, __ occur
ocean trench
island arc
volcanoes
strong earthquakes
16
List the 4 major layers of the Earth, starting from the center.
inner core, mantle, outer core, crust
outer core, inner core, mantle, crust
inner core, outer core, mantle, crust
crust, mantle, outer core, inner core
17
Seafloor spreading was proposed by ___.
Harry Hess
Alfred Wegener
Bill Nye
Mr. Glinche
18
What scale is used to measure an earthquake's magnitude?
Richter Scale
Mercalli Scale
Seismic Scale
Fujita Scale
19
When the tension at a plate boundary is released, a ____ occurs.
tornado
earthquake
eruption
tsunami
20
What feature could occur as India (Continental Crust) collides with Asia (Continental Crust)
valleys
continental shelf
mountain range
mid ocean ridge
21
Where does the heat come from that drives the convection in the mantle?
lower mantle and core
the sun
Ms. Roberts, because she's just awesome like that.
plate movement
22
What evidence did NOT support the idea of seafloor spreading?
age of oceanic crust
magnetic stripes in the rock on the ocean floor
deep ocean trenches
eruption of molten material
23
The super continent in the continental drift hypothesis was called...
Mesosaurus
Panthalassa
Pangaea
Africa
24
A device used to measure the magnitude of an earthquake is called a
thermometer
seismogram
seismometer
seismograph
