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MapsCrustal Features
Unit 7 Surprise!
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BoundariesScientists
& Theories
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Match the topographic maps with their corresponding profiles.
Describe how fossil evidence helps to support Alfred
Wegener’s theory of continental drift.
Explain how the term proposing
is used in science
To present for consideration, examination, or criticism
Ex. “He proposed a new theory for plate tectonics.”
Scientists use models to illustrate scientific principles or to
demonstrate theories.
What is a limitation of a model?
An aspect of the model that limits it
from being a perfect representation.
Ancient land mass believed to have broken up
to form today’s continents.
If Alfred Wegener is right, and Pangaea did exist, what does this tell us about the Atlantic Ocean?
That it has developed over time and that at one time it did not exist.
What are contour lines?
Contour lines are lines on a topographic map that connect areas that have
the same elevation.
What do intervals between contour lines represent?
A change in elevation
True or False: If contour lines are close together then
the slope is steep
True: The closer the contour lines are
together, the steeper the slope.
What is the relief on this landform?
In which direction would water flow on this map?
The upper mantle,
where plates float
is called the…
Describe where and how
deltas form.
Deltas form when a body of sediment is
deposited at the mouth of a river or stream
where it enters an ocean or lake.
Around which lithospheric plate does the Ring of Fire
take place?
Define the word terrain.
When moving water, ice, wind, or gravity drops a
load of Earth materials in a new place, it is called…
Name 3 types of plate boundaries and
describe their movement.
Convergent plates collide
Divergent plates separate
Transform plates slide past each other
Mountain ranges on land and trenches both occur at this kind of boundary
In this image, where is the youngest ocean floor?
Describe the boundary type and crustal feature at this location
This is a fault occurring at a
transform boundary.
What kind of boundary is this and
what is occurring
at this boundary?
This is a divergent boundary where
subsidence is occurring.
Describe the difference between
weathering and erosion.
Weathering breaks up rock into smaller pieces.
Erosion moves those pieces of rock (sediment)
from one place to another.
Name two crustal features that can
occur at a divergent boundary.
Rift Zoneor
Oceanic Ridgeor
Underwater Mountain Range
Name the crustal feature.
Describe the crustal feature and the boundary type that is
occurring at this location.
The Mid-Atlantic Ridge is an oceanic ridge occurring at
a divergent boundary.
If new land is formed at oceanic ridges as the seafloor is spreading, why is our Earth not
growing larger as time goes on?
Earth’s crust is not only growing at areas like oceanic ridges, but it is also being recycled at areas like subduction zones.
These crustal movements balance each other out sothat there is no net growth in the Earth’s size.