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Geo Re Hard


How old is the earth? 4.6 billion years old.
Pangea It is a supercontinent, which includes all of the earth's masses. It exisited from 200
Meltwater It is water resulting from the melting of glacier ice and snow.
Topography Natural and features of a landscape.
What is the largest and most easternmost vegetation reigon? Boreal and Taiga
What is the smallest and most southernmost vegetation reigon? Decidious
What is the wettest and westernmost vegetation reigon? West Coast
What is the coldest and northernmost vegetation reigon? Tundra
Glaciation It is the state of being covered by glaciers or massive ice sheets.
Glaciers It is a slow moving mass of ice.
Convection Current It is circular movement in a gas or liquid created by uneven heating in the mantle.
Ridge It is formed when two plates move apart and the heat comes up.
Trench It is formed when two plates collide and one subucts under another.
Subducting It is when one plate slides under another.
Land Formations It is a natural feature on the Earth's surface and there are three types of them.
Highlands It is an area of high elevation containing mountains and plateaus.
Plateaus It is the elevated flat area between highlands.
Lowlands It is an area of low elevation containing plains and hills.
Canadian Shield It is a large area of Precambrian rock that forms the core of Canada.
Erosion It is the wearing away of the Earth's surface followed by the movement to other locations.
Weathering It is the breakdown of rock into small particles.
Escarpment It is a steep cliff formed by erosion or faulting.
Sediments Eroded material, for example sand and gravel that is deposited by wind, water or ice. (WWI)
How are earthquakes and volcanoes formed? They are caused by the movement of the Earth's plates.
Air Mass It is a large body of air, having the same moisture and temperature conditions throughout.
Prevailing Winds They are winds that are most commonly found in an area, for example, over most of Canada's wind is westerlies.
Polar Front It is a stormy boundary between cold and dry polar air and warm moist tropical air.
Jet Stream It is a west to east movement of air in the mid
North Pacific Current It affects the west coast and changes the temperature.
Cold Labradour Current It causes fog conditions and also causes icebergs to melt (Ice Berg Alley).
Jet Stream Current It brings warmer currents over Canada.
Condensation Water vapour is cooled, and changes from an invisible gas to liquid water. The vapour form of this forms clouds.
Created by: knobit