Landforms. Review- Rocks There are 4 different types of rock on/in the earth Magma Igneous...
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Transcript of Landforms. Review- Rocks There are 4 different types of rock on/in the earth Magma Igneous...
![Page 1: Landforms. Review- Rocks There are 4 different types of rock on/in the earth Magma Igneous Sedimentary Metamorphic.](https://reader036.fdocuments.in/reader036/viewer/2022062321/56649f1d5503460f94c33b74/html5/thumbnails/1.jpg)
Landforms
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Review- Rocks
• There are 4 different types of rock on/in the earth
• Magma• Igneous• Sedimentary• Metamorphic
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Magma
• Formed in the mantle• Molten rock
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Igneous Rock
•Formed by the cooling and hardening of Magma/Lava
![Page 6: Landforms. Review- Rocks There are 4 different types of rock on/in the earth Magma Igneous Sedimentary Metamorphic.](https://reader036.fdocuments.in/reader036/viewer/2022062321/56649f1d5503460f94c33b74/html5/thumbnails/6.jpg)
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Sedimentary Rock
• Formed by forces of erosion• Broken rock is buried or under water
• Intense weight compresses the sediment into the rock
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Metamorphic Rock
- Created through great heat and pressure under the Earth’s surface
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WHAT CAN CHANGE THE FACE OF A ROCK?
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Erosion
• Erosion is one of the main forces that can destroy the landscape of an areaoThere are 3 main forces that can
physically break down rock Wind Water Ice
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Wind
• Blows small pieces of rock or dirt around• These pieces can hit other rock, further eroding it
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Water
• Various forms of water break down the landscape• Rain• Water falling• Waves
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Ice
• When water freezes and turns into ice, it expands almost 10% Goes through the “freeze/thaw” cycle
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Over millions of years various types of rock have formed; creating 7 distinct landform regions within Canada
Alberta
Nunavut
BritishColumbia Alberta Manitoba Quebec
Ontario
Northwest Territories
Canada
YukonTerritory
British Columbia
Whitehorse
YukonTerritory
Physical Regions
Western Cordillera
Interior Plains
Canadian Shield
Lowlands
Innuitians
Appalachia
Great Lakes -St. LawrenceLowlands
N
![Page 17: Landforms. Review- Rocks There are 4 different types of rock on/in the earth Magma Igneous Sedimentary Metamorphic.](https://reader036.fdocuments.in/reader036/viewer/2022062321/56649f1d5503460f94c33b74/html5/thumbnails/17.jpg)
Canada’s Landform Regions
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The Canadian Shield
Size: covers almost ½ of Canada
How did it form?-Formed by volcanic eruptions over 3 billion years ago- erosion and glaciers caused mountains to flatten and lose most of its soil
What does it look like?- Large, smooth rock
formations, thousands of lakes and swamps
Main Type of Rock: Igneous
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The Great Lakes- St. Lawrence Lowlands
Click icon to add clip artSize: smallest region
How did it form?- Sediments from the
eroded Canadian Shield built up in ancient seas and formed new land
What does it look like?- Low, fairly flat with some
hills- Covered with a rich layer
of soil
Rock type: majority is Sedimentary
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The Appalachians
Size: majority of Eastern Canada
How did it form?- Plate movement
caused Sedimentary Rock on ocean floor to fold upwards to form mountains
- Erosion lowered mountains and flattened some areas
What does it look like?- Mountainous in
some areas with some flatter plains (rock)
Rock Type: mostly Sedimentary
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Interior Plains
Size: Covers large area in the interior of Canada
How did it form?-sediments settled at
the bottom of inland seas
- When sea disappeared, it left a very flat area with thick, nutrient rich soil
What does it look like?- Very flat plains
Type of Rock: Sedimentary
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Western Cordillera
What does it look like?- Sets of tall mountains
with a flat plateaus in between
Rock Type: all 3 types- igneous, sedimentary, metamorphic
Size: entire West Coast
How did it form?3 areas- Rocky Mountains-
plate movements folded the earth
- Coast Mountains- Volcanic eruptions
- Interior Plateau- formed from lava that flowed from the volcanoes
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Hudson Bay and Arctic Lowlands
Size- large section of Northern Canada (territories)
How did it form?- Sedimentary rock left
from erosion and glacier scraping
What does it look like?- Bare rock with stony
areas
Type of Rock: Sedimentary
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Innuitions
Size: Northern Canada, most of Nunavut’s northern islands
How did it form?- Folded sedimentary
rock from the ocean floor
What does it look like?-ice and snow covered
mountains
Rock Type: Sedimentary