Answer key

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Last edited 42 days ago by Learn LoopHQ.

Chapter: 08. North America

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Answer in One Line Answer Key

The Canadian or Laurentian Shield is composed of some of the oldest known hard rocks on Earth, rich in various minerals.

The coldest place in Canada is Snag, in Yukon, which has recorded the lowest temperature of -63° C.

Two large, often snow-covered islands in the north of North America are Baffin Island and Victoria Island.

The coastal parts of Alaska are frost-free even in winter because of the influence of the warm Alaskan Current.

The Bering Strait separates North America from Asia in the north-west.

The use of power-driven saws, powered cranes, and automobiles has made the life of lumberjacks today less difficult than in the past, transforming lumbering into a permanent activity.

The lowest point in North America is Death Valley in California, which is 86 meters below sea level.

The highest peak in North America is Mt Denali (formerly Mt McKinley), located in the Alaska Range.

The primary purpose of lumbering as an economic activity is the cutting down of trees and their subsequent processing to manufacture products like paper, newsprint, and synthetic fibres.

1-meter logs from lumbering in Canada are primarily used in the manufacture of pulp and paper, with newsprint being a major product.

Animals in the Coniferous or Taiga vegetation region have thick fur and layers of fat under their skin to protect them from extreme cold, and some also hibernate all through winters.

The Tundra region’s vegetation comprises mosses, lichens, grasses, and dwarf bushes.

In the context of the USA, “melting pot” signifies that the country is home to diverse groups and cultures from various parts of the world, who come for education and employment opportunities.

‘Cordillera’ is a Spanish word meaning “a rope or chain,” and it was given to the Western Mountain System because its parallel ranges resemble twisted cords.

Cattle rearing is the main occupation in the Temperate grasslands or Prairies.

Copper and gold are found extensively in the Rocky Mountains and around the Great Lakes.

The Western Cordilleras extend for about 6,500 km in North America and continue as the Andes in South America.

North America was named after the Italian explorer Amerigo Vespucci, who reached the continent in 1507 CE.

Two warm ocean currents that influence North America’s climate are the Gulf Stream and the Alaskan Current.

North America imports large quantities of petroleum despite being a major producer because its internal demand for oil is very high.

The Appalachian Mountains are 2,575 km long, and their highest point is Mt Mitchell (2,037 m).

Softwood trees such as spruce, jack pine, hemlock, cedar, and poplar are commonly found in the coniferous or taiga forests of Canada.

High-grade bituminous and anthracite coal are mainly found in the Appalachians.

Deciduous trees have broad leaves, shed them once a year in the dry season, and yield hardwood, while coniferous trees have needle-like leaves, do not shed them seasonally (appearing green all times), and yield softwood.

The adventurous European seamen, such as the Norsemen and the Vikings, visited America as early as 986 CE, but their discovery remained forgotten compared to Columbus’s later voyages.

A gorge is a deep, narrow valley with a river running along its bottom, often smaller but steeper and narrower than a canyon.

The Western Mountain System is prone to earthquakes and volcanic activity because it lies very close to the Pacific Coast, forming part of the active Pacific Ring of Fire.

The United States of America and Canada occupy more than three-fourths of North America’s area.

The Fall Line, marked by a series of waterfalls, is utilized to generate hydroelectric power in the Eastern Highlands.

Lumberjacks’ log houses have steep sloping roofs that allow snow to slide off and slightly raised floors to avoid contact with the cold frozen ground.

Large dams have been constructed across rivers such as the Columbia and the Tennessee to produce hydroelectric power in North America.

The wildlife in the desert vegetation regions of North America mainly consists of snakes, lizards, scorpions, desert rats, and desert foxes.

The tropical islands of the Caribbean Sea are collectively called the West Indies.

The Mississippi-Missouri river system is the largest river system in North America.

Besides paper and newsprint, Canada’s timber resources also benefit the construction and furniture industries, as well as the production of plywood, pre-fabricated building materials, and rayon textile.

The freshwater lakes in the Canadian Shield region were formed when meltwater from glaciers filled the deep hollows and depressions scraped out by moving ice during the Ice Age.

North America lies in the northern and western hemispheres.

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