Activity—World Map of Plate Boundaries
Activity--World Map of Plate Boundaries
"Where's Waldo"-style geography.
Mapping World Plates helps students connect topography, earthquakes, volcanoes, and plates.
Includes many maps for printing, and student worksheets. Color copies are in the folder:
4. ACTIVITIES_Earth & Tectonics > World Plate Boundaries
PLATE BOUNDARIES Divergent margin
Convergent margin
Transform fault (arrows show relative motion)
Most of the world's earthquakes and volcanoes are found at or near the boundary between two tectonic plates. Friction between the plates keeps them from sliding. When the frictional strain is overcome, the ground suddenly snaps along faults and fractures releasing energy as earthquakes. Volcanoes occur at divergent margins (where magma rises and erupts); at convergent margins (where an oceanic plate dives beneath another plate; magma forms in the continental plate above the diving oceanic plate), and less commonly as hot spots (where magma melts through a plate, such as Hawai`i).
SYMBOLS White arrows show plate motion direction Volcanoes (generalized) Hot spot (arrow = direction of plate motion) Great earthquakes since 1900;
before 1900
Science Standards
(NGSS; pg. 287)
? Earth's Place in the Universe: HS-ESS1-5
? Earth's Systems: HS-ESS2-1, MS-ESS2-2, HS-ESS2-2, MS-ESS2-3, HS-ESS2-3
Resources on this DVD & Internet for World Map of Plate Boundaries
VIDEOS: In the folder
3. VIDEOS_Earth & Tectonics > LECTURE_Egg Vs Earth_Butler.mov,
LECTURE_TectonicPlates_Butler.mov,
LECTURE_Asthenosphere_Butler.mov, and
LECTURE_BoundaryTypes_Butler.mov
Or online:
ANIMATIONS: Select animations are in the RESOURCES folder for this activity. 3. Animations_Earth & Tectonics > Plate Interaction_Converge Diverge Transform Or online:
INTERNET: This Dynamic Planet, interactive tectonic map
e-binder for 2014 CEETEP workshop
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World Map of Plate Boundaries
Introduction
The Plate Tectonics Mapping Activity allows students to easily begin to identify basic tectonic processes on a global scale. As students become aware of plate movements, they begin to identify patterns that set the stage for deeper understanding of a very complex topic. The activity uses a simple "Where's Waldo" approach to identify tectonic symbols on a laminated World Plate Tectonic map.
Objectives
Learn where volcanoes and earthquakes occur Understand geography Use critical thinking to find plate boundaries Answer relevant discussion questions on worksheet
Procedure
Print the appropriate maps (see Materials) for use. Note that the maps in this document need to printed on legal-size paper!!
Students work in pairs or small groups of 3 or 4 students using washable markers to circle tectonic features. This hands-on activity captures the interest of all ability levels. The process of exploring the map and drawing with colored markers captures student interest and creates curiosity to discover why particular features are located where they are. As students work through simple questions on the activity sheet, they are then able to start the more challenging process of understanding the patterns and process that make up the fundamental principles of Plate Tectonics. The Discussion Questions in the activity are provided as a resource for teachers to engage student's growing understanding. The questions have been used in small groups, whole class discussion, research, as a writing assignment, and for evaluation.
Materials
Discussion Questions --Follow student worksheets. Student work sheets--Begin on 5th page of this
activity; answers follow. Word files of the worksheets are in the folder
RESOURCES For World Plate Boundaries
> Word Docs for World Plate Boundaries
Maps--The map on the next page is offered in several formats for classroom use. Since not everyone has access to a large-format printer we offer the poster as a 3-page, tabloid-size pdf file that can be printed and taped together. The maps are also offered WITHOUT tectonic boundaries to be used to see if students recognize features in the landscape.
1) Page size (next page) and on DVD in the folder:
RESOURCES For World Plate Boundaries
Maps for printing
>
WorldTectonicMap_PageSize.pdf.
2) Poster (14x24) requires a plotter to print WorldTectonicMap_POSTER 14x24.pdf
3) Poster (tabloid-size pages to be taped together) WorldTectonicMap-Poster_3page11x17.pdf
4) WITHOUT tectonic features to be used to see if tectonic features show up in the landscape: WorldTectonicMap_NoBoundaries8.5x14.pdf. WorldTectonicMap_NoBoundaries11x17.pdf.
70
Map of Major Tectonic Plates and Select Great Earthquakes and Volcanoes.
Map of Major Tectonic Plates and Select Great Earthquakes and Volcanoes.
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PLATE BOUNDARIES
Most of the world's earthquakes and volcanoes are found at or near the boundary between two
Divergent margin Convergent margin
A N T A R C T I C P L A T E Divergent Boundaries & Spreading Zones
Spreading center--Fast
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Hot spot (arrow shows direction of plate motion)
Great earthquakes since 1900;
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White arrows show plate motion direction
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Transform fault (arrows show relative motion)
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commonly as hot spots (where magma melts through a plate, such as Hawai`i).
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Oceanic crust
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Asthenosphere Partial melt
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(Ex. BEaasctkgPraocuinfidc mRiaspe,cMouidrteAsttylaonftSiccott Walker (Digital Cartography Specialist, Harvard College Library); graphics and tectonic & volccanic features by Jenda Johnson (Volcano Video & Graphics)
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Asthenosphere
(ex: Basin & Range, U.S. and the Great Rift Valley, Africa. )
Partial melt
Ocean-Ocean--Ocean plate dives beneath another ocean plate; volcanic island chain forms above
Ocean-Continent: Ocean plate dives beneath a continental plate. Volcanic mountain chain forms inland.
Continent-Continent: Two thick continental plates collide and buckle into high mountains.
the zone (ex:. The Marianas)
(ex:. Cascade Range, Sumatra, Japan)
(ex: Himalaya Mountain Range.)
Crust Lithosphere
Asthenosphere
Strike slip faults result from two plates moving horizontally in opposite directions (ex: San Andreas Fault, California).
together, the in-between areas are pushed around on the surface.This forces them to slide past each other horizontally.
Transform fault (arrows at convergent margins (where an oceanic plate Background map courtesty of Scott Walker (Digital Cartography Specialist, Harvard College Library); graphics and tectonic & volccanic features by Jenda Johnson (Volcano Video & Graphics)
show relative motion)
dives beneath another plate; magma forms in the
Great earthquakes since 1900;
Spreading ridge
Transform fault
Lithosphere Asthenosphere
Spreading ridge Crust
Partial melt
Transform faults are where t
platesSaprreeadmingoving a spreadriindgge ridge
away from and frTarcatnusfro
zones develop (ex: ocean floo
Lithosphere Asthenosphere
Transform faults a plates are moving a a spreading ridge a zones develop (ex:
continental plate above the diving oceanic plate),
before 1900
and less commonly as hot spots (where magma
melts through a plate, such as Hawai`i).
e-binder for 2014 CEETEP workshop
71
Divergent Boundaries & Spreading Zones
Spreading center--Fast
Divergent boundaries occur mostly along spreading centers where the magma rises forming new crust. (Ex. East Pacific Rise, Mid Atlantic Ridge.)
Lithosphere Asthenosphere
Oceanic crust Mantle
Partial melt
Spreading zones (no graphic) on continents create parallel mountains and valleys as the crust pulls apart (ex: Basin & Range, U.S. and the Great Rift Valley, Africa. )
Spreading center--Slow
Mountains & valleys
Lithosphere
Asthenosphere
Crust Mantle
Partial melt
Convergent Boundaries
When two plates move toward each other, crust is destroyed as one plate dives (is subducted) beneath the other. The location where sinking of a plate occurs is called a subduction zone.
High Plateau
M oRuanntga ien
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i
n c
ca ar
l
Vo
Trench
Trench Island
arc
Lithosphere
Oceanic
Asthenosphere
crust
Continental crust
Lithosphere
Oceanic
Asthenosphere
crust
Ocean-Ocean--Ocean plate dives beneath another ocean plate; volcanic island chain forms above the zone (ex:. The Marianas)
Oceanic crust Lithosphere
.
..
.
.C.o.
nt
..
inental . crus
t
Lithosphere
Asthenosphere
.
...
.. ..
. .
Ocean-Continent: Ocean plate dives beneath a continental plate. Volcanic mountain chain forms inland. (ex:. Cascade Range, Sumatra, Japan)
Continental crust Lithosphere
Continental crust Lithosphere
Asthenosphere
Old oceanic crust
Continent-Continent: Two thick continental plates collide and buckle into high mountains. (ex: Himalaya Mountain Range.)
Transform Boundaries
Crust Lithosphere Asthenosphere
As surrounding plates are driven by deep forces to move apart or crunch together, the in-between areas are pushed around on the surface.This forces them to slide past each other horizontally.
Strike slip faults result from two plates moving horizontally in opposite directions (ex: San Andreas Fault, California).
Spreading ridge
Transform fault
Lithosphere Asthenosphere
Spreading ridge Crust
Partial melt
Transform faults are where two plates are moving away from a spreading ridge and fracture zones develop (ex: ocean floor)
72
Name__________________________ Period__________ Date___________
PLATE TECTONICS MAPPING ACTIVITY
1. Draw the symbol for each tectonic feature in the chart below
Divergent margins and spreading centers (draw in black)
Convergent margins - subduction zone (draw in blue)
Transform faults ? strike-slip faults
(draw in green)
Hot Spot
(draw in red)
2. Use the correct color of washable marker to locate each tectonic feature on the map.
a. Circle the name of the Divergent boundary systems
in black. (Ridges and Rises)
Number found _______
b. Circle the Convergent margins in blue. (students may circle individual trenches)
Number found _______
c. Circle the Transform fault symbols (and their faults) in green.
Number found _______
d. Circle the Hot Spots in red.
Number found _______
3. What is the name of the small crustal plate off the Oregon coast that is subducting under the North American plate? _______________________
4. Where are most of the earthquakes and volcanoes located? Check one: a. crustal plate margins _____ b. interior of a crustal plate _____
Answer the following questions about Plate Tectonic Processes using the diagrams with the map.
5. Divergent margins and continental spreading centers:
a. New crust forms at plate margins as ___________ rises creating ridges under
oceans such as the _____________________ and the ____________________.
e-binder for 2014 CEETEP workshop
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b. Continental spreading centers include the __________________ in the US and the _______________________ in Africa.
6. Convergent margins ? subduction zones: Identify the land form (geomorphology) created at each type of Convergent Boundary and provide an example. a. Ocean-Ocean _____________________________________________________ b. Ocean-Continent __________________________________________________ c. Continent-Continent ________________________________________________
7. Transform faults ? strike slip faults a. Sometimes tectonic plates shift past each other horizontally ________________ directions at their boundary. b. One example of a strike slip fault near San Francisco is the _________________.
8. Earthquakes: a. Most earthquakes occur near plate _____________. b. _____________ keeps the plate edges from sliding smoothly past each other. c. The longer the plates remain stuck, the more strain builds and the more violent the snap and resulting _____________.
9. Volcanoes: a. Magma rises to the surface from inside the earth mainly at __________________ and _______________________. b. Around the rim of the Pacific Ocean, the 40,000 km long ________ of ________ is especially active.
10. Hot Spots: a. In a few places _________ melts through a tectonic plate. b. Each hot spot likely marks the top of a plume of _____________ rock that rises from deep in the earth.
74
Discussion Questions: (italics are guiding ideas on a few random questions.)
Discussion questions can be used in a whole group setting, or selected questions may be assigned to table groups to answer and then shared with the class.
1. Does the location of earthquakes and volcanoes show a pattern? If so, what tectonic process may be responsible? (compression, extension, shearing)
2. Generally speaking, where are the oceanic ridges located with respect to the landmasses? (in the middle of the ocean: heavy thin crust sinks and water fills low areas.)
3. Where do you find the mountain ranges with respect to the oceanic ridges? Use examples. (the ocean-floor ranges are on the crest of the spreading ridges where heat provides the buoyant lift; they sink as they cool.)
4. Are there any places on Earth where the mid-oceanic ridges meet the continent?
5. What are seamounts?
6. Most of the Pacific Ocean is on what plate?
7. What is the compass orientation of the Hawaiian Islands and many of the other smaller ridges within the Pacific Ocean? Is this significant? (the islands are moving away from the hotspot in the direction the plate is traveling. Thus the line of the youngest islands is oriented west-northwest as they move towards Japan)
8. In what compass direction is the Pacific Plate moving? (see previous question)
9. Name the biggest and longest mountain range in the world. What is it? (Trick question. It is a mid-ocean ridge.)
10. Name an island chain that has been formed by a "hot spot". (see question 7 above.The Hawaiian Islands.)
11.What island in the North Atlantic Ocean is splitting apart? What is causing the split? (Iceland is a hotspot that is straddling the Mid-Atlantic spreading ridge. The spreading ridge is causing the split. If it were just a hotspot it would just build a big edifice.)
12. Where is magma rising to the surface and forming ocean crust? (At spreading ridges) Where is the oceanic crust sinking back into the mantle? (At subduction zones)
13. Some people have referred to the process in the above question as a cycle. Why would it be considered a cycle? (Rock is formed at the spreading ridge; gets destroyed at subduction zones. The subducted rock eventually gets absorbed into the mantle and gets caught in the very slow circulation of rock in the mantle which can melt as it rises to the top again.)
14. What are the attributes of a cycle? Can you describe another cycle that could compare with the example described above.
15. Why is it that the Pacific Ocean floor is no older than about 200 million years and yet the continents are much older? (The ocean floor is being created constantly. It is made of heavy rock that tends to subduct when it meets continental rock. The continents are made of older rock that is more buoyant .
16. The continental margins of the East and West Coast of the United States are very different. Describe the differences. Are there tectonic differences?
17. Where would you expect to find igneous, sedimentary and metamorphic rocks?
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75
Teacher Answer Key
PLATE TECTONICS MAPPING ACTIVITY
1. Draw the symbol for each tectonic feature in the chart below
Divergent margins and spreading centers (draw in black)
Convergent margins - subduction zone (draw in blue)
Transform faults ? strike-slip faults
(draw in green)
Hot Spot
(draw in red)
2. Use the correct color of washable marker to locate each tectonic feature on the map.
a. Circle the name of the Divergent boundary systems
in black. (Ridges and Rises)
Number found __7_____
b. Circle the Convergent margins in blue. (students may circle individual trenches)
Number found __16 +__
c. Circle the Transform fault symbols (and their faults) in green.
Number found __10____
d. Circle the Hot Spots in red.
Number found __5____
3. What is the name of the small crustal plate off the Oregon coast that is subducting under the North American plate? __Juan de Fuca_________
4. Where are most of the earthquakes and volcanoes located? Check one: a. crustal plate margins __X__ b. interior of a crustal plate _____
Answer the following questions about Plate Tectonic Processes using the diagrams with the map.
5. Divergent margins and continental spreading centers:
a. New crust forms at plate margins as _magma___ rises creating ridges under oceans such as the _Mid-Atlantic Ridge__ and the __East Pacific Rise__.
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