Rock cycle & Mining Flashcards
How old is the oldest rock in the world?
4.28 billion years old
What builds up the earths surface?
Volcanic & tectonic processes build up the earths surface
What wears down the earths surface?
Weather & erosion wear down the earths surface
What creates ignenous rock?
Cooled magma
- crystilization
What creates sedimentary rock?
weather & eroision of rocks at the surface
What creates metamorphic rocks?
rocks under high heat & pressure
What causes weathering?
wind, water, ice & gravity
What is erosion?
MOVEMENT of weathered rock & soil from one place to another
what is weathering?
BREAKING of large rocks into small rocks over time
what are canadas three mountainous reigons?
innuition to the north
cordilerra to the west
applachain to the east
What are the innuitain mountains?
- very high mountains
- to high for plants to grow
-largerly unexplored, due to hostile climate
What are the western cordillera?
- high mountains running from north to south
- deer, elk, bears
- very light population
- lots of minerals
What are the appalachian mountains?
- rolling mountains & hills
-large trees & forests
- squirrels, rabbits & deers
- long oceans & deep harbours
- coal, iron & zinc
What are 3 lowland landform regions of canada?
Arctic lowlands
Hudson bay lowlands
Great lakes / St. Lawerence
What are the artic lowlands?
low lying barren lands
summer short & cold winters
- mostly permafrost & snow
- EXTREMLY FEW plants
- impossible farming
