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The Canadian Shield

Social Studies 9: Joshua, Melissa, Amanpreet, Shreya

Joshua Sol

on 14 March 2013

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Transcript of The Canadian Shield

The Canadian Shield By: Joshua, Melissa, Amanpreet and Shreya Vegetation -The Canadian Shield has a very rocky surface and prevents trees from growing -soil lacks nutrients because of acidity -acid needles from trees make the soil
acidic causing damage to the roots of plants -The soil is very thin and sandy -The soil quality is not very good for vegetation - “The Canadian shield is the largest region in Canada. It’s shaped like a saucer. The Canadian shield is highest along the edges and lowest in the centre around the Hudson Bay.” - The Canadian Shield started forming about 3 million years ago. The metamorphic rocks folded and crumpled deep inside the earth and formed mountains. Climate - climate is different around the region - summer is the rainiest and sunniest season - summers are short and warm and winters are long and cold in the northern part of the region - in the southern part of the region, summers are cool and heavy snowfalls occur during the winter - in August, rain happens 1 out of every 3 days - the western part receives about 400mm of precipitation every year Region - the shield also dips into the United States to form the Adirondack Mountains of New York and the superior uplands of Michigan, Wisconsin, and Minnesota. -There is a lot of permafrost on the ground
and not enough precipitation for agriculture to flourish - A huge, rocky region that curves around Hudson Bay like a horseshoe - about 95 percent of the shield’s 1864000 (square-kilometres) area lies in Canada - a few million years of advancing and retreating glaciers have actually carried pieces do the shield into southern Ontario and the northern United States - Canada is the second largest country on earth. It occupies an enormous area of land. It centres around the Hudson Bay. The Canadian Shield is characterized by a rocky, poor soil and cold temperatures - Alberta, Manitoba, Saskatchewan, Quebec, Ontario, Nunavut and the North West Territories make up the Shield. - The shield is made out of one of the oldest rocks on the planet. - Average elevation of the shield is about 100 metres above sea level in the north and 500 metres above in the south. - “During the Ice Age, glaciers removed most of the soil off the rocks, leaving a barren rock surface in many places.” Thank you for looking at our presentation. - The Canadian Shield is incredibly rich in mineral sources. - It covers most of Greenland, Nunavut, Ontario and Quebec. - It was formed about 2 billion years ago. - The shield is a huge, rocky region. - Gold, nickel, copper and silver are found in the shield. Interesting Facts Topography - areas like Newfoundland receives about 1 600mm of precipitation
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