Landforms of Utah - PTFS is a leading enterprise content

geology.utah.gov3/09

UTAH GEOLOGICAL SURVEY

Landforms of Utah

Fifth Grade Science Concepts

Utah Science Core Curriculum5th Grade

Standard IIStudents will understand that volcanoes, earthquakes, uplift,

weathering, and erosion reshape Earth’s surface.Obj. 1 Describe how weathering and erosion change Earth’s surface.

Obj. 2 Explain how volcanoes, earthquakes, and uplift affect Earth’s surface.

Obj. 3 Relate the building up and breaking down of Earth’s surface over timeto the various physical land features.



Science BenchmarkThe Earth’s surface is constantly changing. Some changes happen very slowly overlong periods of time, such as weathering, erosion, and uplift. Other changes happenabruptly, such as landslides, volcanic eruptions, and earthquakes. All around us, wesee the visible effects of the building up and breaking down of the Earth’s surface.



List of slides*

1. Landforms of Utah2. 5th grade science core curriculum3. List of slides4. Quick outlineObjective 25. How volcanoes, earthquakes, and uplift affect Earth’s

surface.6. Volcanoes create landforms7. Volcanic eruptions create different mountains8. Cinder cone and shield volcano9. Composite volcano10. Crater11. Islands12. Earthquakes create landforms13. Fault14. Fault scarp15. Wasatch fault scarp16. Mountains and valleys17. Uplift creates mountains and plateaus18. Uplift and different types of mountains19. Volcanic mountains and fault-block mountains20. Folded mountains and dome mountains21. PlateausObjective 122. Erosion on plateaus

23. River erosion & deposition / meandering river24. Entrenched meanders25. River erosion during flooding26. Different canyon shapes27. Glacier28. Glacier erosion (cirque)29. Glacier deposition (moraine)30. Wind erosion & deposition31. Weathering32. Freeze-thaw weathering33. Freeze-thaw weathering creates different geological

features34. How arches form35. Arches vs. bridgesObjective 336. Grand Canyon37. Island in the SkyExtra38. Lake Bonneville shorelines39. Landslide – fast erosion & deposition

* See notes with each slide for definitions and explanations.* Some slides are animated (so keep on clicking!)



Quick outline

• Volcanoes can create mountains, craters, and islands.• Volcanic eruptions can create different types of mountains: cinder

cone, shield volcano, composite volcano.• Earthquakes can create fault scarps, mountains and valleys.• Uplift can create mountains and plateaus.

• Erosion on plateaus can create mesas, buttes, and pinnacles.• River erosion and deposition / the meandering river.• V-shape canyon eroded by a river.• U-shape canyon eroded by a glacier.• Wind erosion and deposition.• Weathering.• Arches vs. bridges.

Objective 2 Explain how volcanoes, earthquakes, and uplift affect Earth’s surface (slides # 5 – 21)

Objective 1 Describe how weathering and erosion change Earth’s surface (slides # 22 – 35)

Objective 3 Relate the building up and breaking down of Earth’s surface over time to the various physical land features (slides # 36 - 37)



• Volcanic eruptions can create mountainsand other landforms.

• Earthquakes can create small to largelandforms, including mountains and valleys.

• Uplift can result in mountains and plateaus.

Objective 2

Explain how volcanoes,earthquakes, and upliftaffect Earth’s surface.



Volcanoescan create . . . Craters

Photo courtesy of NASAhttp://gohawaii.about.com/library/gallery/blgallery573.htm

Islands

Mountains

pubs.usgs.gov/gip/volc/types.html



Volcanic eruptionscan create differenttypes of mountains.

Cinder cone near St. George

Cindercone

Shield volcano north of Great Salt Lake

Shield volcano Composite volcano

http://Vulcan.wr.usgs.gov/volcanoes



Cinder coneA small cone-shaped

volcano with steep sides.

Cinder cone near St. George

Shield volcanoA wide, low-profile

volcano shaped like aflattened dome.

Shield volcano north of Great Salt Lake



Composite (stratovolcano) volcanoA very tall and large volcano with steep sides.




CraterA circular-shaped depression at the top of a volcano

formed by collapse from a large eruption.



IslandA land mass (smaller than a continent) that is

surrounded by water.

Photo courtesy of NASAhttp://gohawaii.about.com/library/gallery/blgallery573.htm

The HawaiianIslands areformed byvolcanic

eruptions.



Earthquakescan create …

Mountainsand valleys

Wasatch Range and Salt Lake Valley

Fault scarps



fault

FaultA crack in the Earth’s surface along whichtwo rock masses slide past one another.



Fault scarpA steep break (escarpment) that forms where vertical

fault movement reaches the ground surface.



Fault scarp formed by movement along the Wasatch fault.

Juab County

Mountains and valleys





UpliftA rise of land to a higher elevation.

Uplift can create …

Tushar Mountains

Mountains

Digital.lib.uiowa.edu/cdm4/results.php?CISOOP

Colorado Plateau

Plateaus



Uplift can result in creating differenttypes of mountains.


Volcanicmountains Folded

mountains

Wasatch Range

Fault-blockmountains

Navajo Mountain

Dome mountains



Fault-block mountainA mountain that rises

along a fault.

Wasatch Range

Wasatch fault

Volcanic mountainA mountain that forms asrising magma erupts onto

the Earth’s surface.




Navajo Mountain

Dome mountainA mountain produced where aregion of flat-lying sedimentary

rocks is bowed upward to form astructural dome.

Folded mountainA mountain formed by

compression of theEarth’s crust.

http://gsc.nrcan.gc.ca/natmap/cf/images/syncline440.gif



Wasatch Plateau

PlateauA large, wide landform that is much higher than the adjacent land.

Kaiparowits Plateau

Straight Cliffs

Digital.lib.uiowa.edu/cdm4/results.php?CISOOP

Colorado Plateau



Erosion on plateaus results in different geological features.

mesa

buttepinnacle

Castle Valley

Objective 1

Describe howweathering anderosion changeEarth’s surface.

ErosionThe wearing away and carrying away of land

by water, wind, or moving ice.



River erosionand deposition

San Juan River

Picasawebhttp://picasaweb.google.com/lh/view?q=san%20juan%20river%20&psc=G&filter=1#5212557515730750498

Meanderingrivers

ErosionThe wearing away and carrying

away of land by water, wind,or moving ice.

DepositionThe laying down of eroded

material (sediments) by water,wind, or moving ice.



Entrenched meanders

San Juan River



River erosionduring flooding

Santa Clara River



Different types of erosioncreate different canyon shapes.

Stream-eroded canyon“V-shaped”

Mill Creek Canyon

Glacier-eroded canyon“U-shaped”

Little Cottonwood Canyon



GlacierA large sheet of moving ice.



Mt. Nebo

Glacial erosioncreates othergeologicalfeatures . . .

CirqueSemi-circular bowl formed at

the head of a glacier.



Glacial depositioncreates geologicalfeatures . . .

moraines

LittleCottonwood

Canyon

BellsCanyon

Wasatch fault

MoraineRidge-like landform depositedat the end or sides of a glacier.



Wind erosionand deposition

Little Sahara Recreation Areahttp://www.gps.caltech.edu/~carltape/personal/images/ge136/ge136_photos.html

Moab



WeatheringThe breaking down of rocks into smaller pieces by natural processes.

Rocks can be broken down by water, air, chemicals, temperaturechanges (freezing and thawing), and plant and animal activity.



Freeze-thaw weatheringThe breaking down of rock by repeated cycles of freezingand thawing of water in cracks and other openings in rock.

stloe.most.go.th/.../302/images/3_2_3.jpg

Water fills a crack and freezes to ice and expands, which canbreak apart the rock.



Weathering caused by freeze-thawcan create . . .

Rockfalls

Arches

Arches National Park

Hoodoos

Bryce Canyon National Park



Photo courtesy of Louis J.Maher, Jr.

http://www.geology.wisc.edu/~maher/air/air05.htm

How archesform

Landscape Arch



Arches vs. Bridges

Delicate ArchArches National Park

Owachoma BridgeNatural Bridges

National Monument



Objective 3

Relate thebuilding up andbreaking down ofEarth’s surfaceover time to thevarious physicalland features.

Photo courtesy National Park Servicehttp://www.nps.gov/archive/grca/photos/



Candlestick Butte & Island in the SkyCanyonlands National Park



Extra (1 of 2): forinterested teachers

Lake Bonneville shorelines

Point of the Mountain (photo left) at theborder of Salt Lake and Utah Counties



Extra (2 of 2): forinterested teachers Fast/big step erosion and

deposition by a landslide

Thistle LandslideUtah County

Landforms of Utah - PTFS is a leading enterprise content

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