E.8.9A.1
E.8.9A.2
E.8.9A.3
E.8.9A.4
E.8.9A.5
100
A student writes down some possible properties of different layers of Earth.
Which layer(s) is (are) matched with the correct properties?
Asthenosphere only
100
Which statement supports the claim that the continental crust was once joined together as one supercontinent, Pangaea?
- The seven continents’ borders match up together similar to puzzle pieces.
- The continent of North America has gradually grown in size over the past 4 billion years.
- Seismic activity occurs at plate boundaries around the world.
- Every continent has at least one major mountain range.
The seven continents’ borders match up together similar to puzzle pieces.
100
The graphic shows the distribution of fossils of four different organisms (Cynognathus, Mesosaurus, Glossopteris, and Lystrosaurus ) spread across different landmasses.
Which theory or law is most likely supported from the information in the graphic?
The Theory of Plate Tectonics
100
The picture below shows a rock structure.
Which characteristic of this rock structure results directly from the action of erosion?
color
type
shape
age
Shape
100
The image shows a convergent boundary where oceanic crust collides with continental crust.
What is the most likely result of this geologic activity?
Oceanic crust subducts beneath the continental crust.
200
A student looks at an image showing the different layers of Earth beneath the Atlantic Ocean.
What process directly moves the plates?
Convection Currents
200
Why do geologists drill through the oceanic crust in their attempt to reach the mantle?
- It is softer than the continental crust.
It is thinner than the continental crust.
It is younger than the continental crust.
It is less dense than the continental crust.
It is thinner than the continental crust.
200
Greenland is very close to the North Pole and is covered with continental glaciers. What conclusion can be made about evidence of glaciers found in the northeastern United States?
It was much colder in the northeastern United States in the past.
200
The diagram shows the formation of an oceanic trench.
How are oceanic trenches formed?
They are formed by destructive processes, where one plate subducts beneath another.
200
A teacher shows a tectonic plate boundary diagram to her class.
What type of plate boundary does the diagram best represent?
an oceanic-oceanic divergent plate boundary
300
What is the order of the Earth's interior from surface to center? (4 layers)
Crust, mantle, outer core, inner core
300
How do rock samples collected from the sea floor provide evidence of tectonic plate movement?
- Older rocks are found near the deep-ocean trenches.
- Older rocks are near the center of mid-ocean ridges.
- Younger rocks are near the deep-ocean trenches.
- Younger rocks are mixed with older rocks at mid-ocean ridges.
Older rocks are found near the deep-ocean trenches.
300
A scientist determines the age of fossils found in different rock layers of a region. The table shows the data recorded.
What can be concluded from the data
Rock layer 4 is the oldest of the rock layers examined.
300
Examine the diagram of a volcano.
Which letter indicates magma?
Letter Z
300
Which diagram best represents the crustal plate motion at the Mid-Atlantic Ridge?
3RD
400
What causes the tectonic plates of Earth to continually move?
CONVECTION CURRENTS
400
The diagrams show 4 cross sections of exposed bedrock.
Which cross section of bedrock shows the least evidence of crustal movement?
Diagram 2
400
A paleontologist discovered many Lystrosaurus fossils in South America, Africa, India, and Antarctica. These fossils are found nowhere else on Earth. Based on the species anatomy and rock layer depth, the paleontologist concluded that the now-extinct Lystrosaurus species was a large land reptile that lived during the Mesozoic Era.
What can be inferred from this fossil evidence?
Millions of years ago, South America, Africa, India, and Antarctica were once joined together in a much larger landmass.
400
A student reads an article from a science journal stating that new crust is being added to Earth at a plate boundary as North America and Europe continue to move away from each other. After reading the article, the student claims that the seafloor is spreading apart at the plate boundary.
Which evidence best supports the student’s claim?
- Earthquakes occur at all divergent plate boundaries.
- Island arcs are found at all subduction zones.
- The crust at the mid-oceanic ridge is younger than the crust far from the ridges.
- Volcanoes form on land in response to plate movement.
The crust at the mid-oceanic ridge is younger than the crust far from the ridges.
400
A student is making a model of the layers of the lithosphere. Which two model materials would compare the relative densities of oceanic crust versus continental crust?
- continental crust: steel; oceanic crust: wood
- continental crust: glass; oceanic crust: Styrofoam
- continental crust: steel; oceanic crust: glass
- continental crust: Styrofoam; oceanic crust: wood
Continental crust: Styrofoam; oceanic crust: wood
500
What is the primary cause for continental drift, earthquakes, and volcanic eruptions?
Convection Currents
500
In 1912, Alfred Wegener proposed the theory of continental drift, stating that all the continents were once joined together and slowly moved apart. However, his theory was not widely accepted in his time. In 1962, the discovery of sea floor spreading (sea floor being forced apart by the formation of new crust) eventually led to a more modern and widely accepted theory of plate tectonics.
Why did the theory of plate tectonics improve upon Wegener’s theory of continental drift?
The theory of plate tectonics was a more complete theory because it provided a reason and mechanism for why the plates and continents moved.
500
Which explanation best accounts for the fossil evidence?
The continents were once joined together within a larger landmass.
500
Which landform change results from constructive volcanic eruptions?
splitting of a supercontinent
formation of new islands
formation of entire mountain ranges
folding and faulting of rocks in the landscape
formation of new islands
500
Which diagram shows a plate boundary that is typical for the formation of volcanoes?
2ND