Earth’s Surface and Currents

Topographic maps illustrate Earth's land surface. In the topographic map shown, identify the land area that represents a steep slope.

Select ONE correct answer.

Tags

112.20.b.9.C

A topographic map displays contour lines that connect equal points of elevation. If hiker A is standing at point X and hiker B is standing at point Y, what is the difference in elevation between the two hikers?

Mathematical Equivalence

ON

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112.20.b.9.C

Complete the passage below.

Igneous rocks that are partially composed from the mineral iron are magnetized based on the Earth’s magnetic field. In the early 20th century, geologists noticed that some volcanic rocks were magnetized opposite to the direction of the Earth's current field. It was determined that the Earth’s magnetic field reverses after long periods of time. After mapping the ocean floors, geologists determined that the ocean floor was not created all at one time, but was made over time and is continuing to be made. The ocean floor has layers of rock that show the pole reversals. In addition, it was noticed that the rock that was closer to the mid oceanic ridge is much younger than the rock near the shoreline. The diagram shows the oceanic ridges and the Earth’s magnetic field.

The information regarding the magnetic field reversal helped geologists form the theory of _____________________________________.

.

Tags

112.20.b.9.A

Alfred Wegener discovered that the coast lines of some continents match up like a ​ (a)   . An example of this is the coastline of South America and the coastline of Africa. ​ (b)   are giant mounds of ice that te formed over land. They are so large that as they move they scrape the surface of the land leaving deep marks. They then deposit sediments picked up by these scrapings further down their path of movement. There is strong evidence that suggests that the glacial scrapings and deposits that exist in South America, Africa, India, and Australia were made by the same glacier at the same time. These continents are now separated by large bodies of water. ​ ​ (c)   of the land animal Lystrosaurus has been found in the same geological layer on the continents of Africa, India, and Antartica. These continents are now separated by major bodies of water. Alfred Wegener discovered that there are ​ (d)   on both sides of the Atlantic Ocean. An example of this is the Appalachian Mountains that disappear off the coast of Newfoundland and the mountains that are found in the British Isles. These mountain ranges are similar in age and composition. This information helped Alfred Wegener form his theory of ​ (e)   .

• jigsaw puzzle piece
• Glaciers
• similar mountain ranges
• Fossil evidence
• Continental Drift

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3

NGSS.MS-LS4-1

The 3 types of plate boundaries are responsible for creating many land formations. Analyze the list of land formations below and determine what type of plate boundary created it. Choose the correct answer for each.

Groups:

(a) CONVERGENT

,

(b) DIVERGENT

,

(c) TRANSFORM

• Earthquakes

• Sea Floor Spreading

• Seismic Activity

• Faults

• Boundaries move towards each other.

• Rift Valleys

• 
• 
• 
• Subduction Zones

• Mid-Ocean Ridge

• Trench

• 
• Boundaries moving away from each other.

• 
• Mountain Ranges

• Boundaries move past each other.

• 

Tags

112.20.b.9.B

The image below shows the movement of the three trees of plate boundaries. Label each boundary correctly.

a

b

c

Transform

Divergent

Convergent

Tags

112.20.b.9.B

Complete the passage below.

During the ​ (a)   on area coastlines, the temperature of the air over the land is warmer than the temperature of the air over the water creating a ​ (b)   . During the ​ (c)   , the situation is reversed and the air over the water is warmer than the air over the land creating a ​ (d)   .

• daytime
• sea breeze
• nighttime
• land breeze

Tags

112.20.b.10.A

The main source of energy in both atmospheric and oceanic convection is ______________________.

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112.20.b.10.A

Label the weather map below.

c

d

e

f

b

a

g

h

_{^{Low Pressure System}}

_{^{Occluded Front}}

_{^{Heavy Rain}}

_{^{Warm Front}}

_{^{Cold Front}}

_{^{Stationary Front}}

_{^{High Pressure System}}

_{^{Freezing Rain}}

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112.20.b.10.B

Use the following weather map to match the city to the weather forecast.

• Dallas

• Cold Front

• Near Brownsville

• Low Pressure System

• Chicago

• Occluded Front

• Albuquerque

• Warm Front

• Salt Lake City

• High Pressure System

Tags

112.20.b.10.B