World & Physical Geography MCQs

Notes:
Canada houses the Athabasca Sand dunes Provincial Park to protect Athabasca Sand dunes. It forms part of the Boreal Shield Ecozone. It is one of the most northerly active sand dune formations on the earth. It lies on the banks of Lake Athabasca. The dunes are parabolic in shape.

Notes:
The Diego Ramirez Islands, the southern-most inhabited outpost of south America outside Antarctica, is under the control of Chile. It is located in the southern-most extreme of Chile. These islands are surrounded by Cape Horn and Ildefonso Islands. These islands are the important nesting site for black-browed albatross, shy albatross, grey-headed albatross, rockhopper penguin and southern giant petrel.

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The Hindukush mountains, located in Pakistan and Afghanistan are a folded mountain range. Mt. Trich Mir is the highest peak in the Hindukush Mountains.

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The Ozone lies at an altitude between 30 km and 60 km from the earth’s surface. It spans the stratosphere and lower mesosphere. This layer reflects the harmful ultraviolet radiation. The Ozone layer or the ozonosphere is also called chemosphere because a lot of chemical activity takes place here. The temperature rises at a rate of 5°C per kilometer through this layer.

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The position of the Earth when it is at the greatest distance from the sun is called the Aphelion. 
The closest point to the Sun in a planet’s orbit is called perihelion.

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Chinook is a Fohn like wind in Canada and USA which moves down the west slopes of the Rockies. They are beneficial to ranchers east of the Rockies as they keep the grasslands clear of snow during much of the winter.

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Nimbostratus clouds are low clouds. They are also known as ‘rain clouds’. They are dark, thick and accompanied by light to moderately falling precipitation.

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Stationary front is formed when two contrasting air masses converge in such a way that they become parallel to each other and there is no ascent of air. Warm or cold front stops moving, so the name stationary front.

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The Koeppen climate classification system recognizes five major climatic types and each type is designated by a capital letter- A, B, C, D, E, and H.
The capital letters S and W are employed to designate the two subdivisions of dry climate:
S – Semi arid or Steppe
W – arid or desert
Capital letters T and F are used to designate the two subdivisions of polar climate:
tundra – T
icecap – F

Notes:
Seamounts are mountains with pointed summits, rising from the seafloor that does not reach the surface of the ocean. They are volcanic in origin. These can be 3,000-4,500 m tall.