Chapter 3: Geography. Ms. Bartolome. Tuesday, April 25. Importance of Place. Geographers use five organizing principles to help them gather, organize, and analyze their information. Places have a location . Importance of Place. Five organizing principles of Geography…
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Tuesday, April 25
2. Places have physical and cultural characteristics.
3. Places change.
4. Places interact with other places.
5.Places are in regions
1. Canadian Shield
2. Interior Plains
3. Western Mountains
It stretches from the Arctic islands
around Hudson Bay to the Adirondack
Mountains in the US, and east across Labrador.
Shields = Large masses of rock,
which are the oldest parts of the Earth.
At one point in time the shield was a volcanic mountain range as high as the Himalayas.
Over millions of years it has been weathered
and eroded down to a landscape of exposed
rocks and lakes.
Original make up of the shield was igneous
rock, but this has changed by heat/pressure
making it into metamorphic rock.
-making the shield a vast storehouse of mineral
ie. copper, gold, lead, and nickel
As a result of the exposed rock, agriculture
and large scale settlement have been
difficult on the shield.
The Interior Plains stretches from the Canadian Shield to the Rocky Mountains.
The plains have been formed as eroded material from the shield was deposited in layers (horizontal layers are made up of sedimentary rock).
Millions of years ago when there was a tropical
climate in the area, and water covered some of it,
occasional flooding left deposits of plants and animals
-fossil fuels (ie. oil, natural gas, potash)
-formed by being compressed between sedimentary
layers of rock
Made up of parallel mountain ranges
that are separated by a series of plateaus
Rockies and the Coastal Mountains, along
with the interior Plateau, were formed when
plate collision caused the Earth’s crust to
buckle lifting sections into the air.
Sediments carried away by the rivers formed
the rich “Fraser River Valley”
-rich in minerals
ie. copper, gold, molybdenum, coal