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MapsCrustal Features

Unit 7 Surprise!

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BoundariesScientists

& Theories

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Make your wager!

Match the topographic maps with their corresponding profiles.

1-D2-A3-E4-B5-C

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.

Pangaea

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?

80 meters

In which direction would water flow on this map?

The upper mantle,

where plates float

is called the…

Asthenosphere

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?

Pacific Plate

Define the word terrain.

An area of land.

When moving water, ice, wind, or gravity drops a

load of Earth materials in a new place, it is called…

Deposition

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

Convergent

In this image, where is the youngest ocean floor?

A

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.

Trench

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.