world physical geography section 4 MCQ Questions & Answers Detailed Explanation

Answer: (b)

Baghdad, the capital of Iraq, is located on a vast plain bisected by the River Tigris. The Tigris splits Baghdad in half, with the eastern half being called ‘Risafa’ and the Western half known as ‘Karkh’.

The land on which the city is built is almost entirely flat and low-lying, being of alluvial origin due to the periodic large floods which have occurred on the river.

Answer: (a)

1. The Gobi Desert is a vast, arid region in northern China and southern Mongolia. It’s known for its dunes, mountains and rare animals such as snow leopards and Bactrian camels.
2. The Kalahari Desert is a large semi-arid sandy savanna in Southern Africa extending 900,000 square kilometres, covering much of Botswana, parts of Namibia, and regions of South Africa.
3. The Atacama Desert is a plateau in South America, covering a 1,000-kilometre strip of land on the Pacific coast, west of the Andes Mountains. It is the driest non-polar desert in the world.
4. The Nubian Desert is in the eastern region of the Sahara Desert, spanning approximately 400,000 km² of northeastern Sudan between the Nile and the Red Sea.

Answer: (a)

Answer: (d)

• Blizzard – Siberian Plains. A blizzard is a severe snowstorm caused by strong sustained winds of at least 56 km/h (35 mph) and lasting for a prolonged period of time – typically three hours or more.
• Chinook – Prairie Plains. Chinook winds blow in the interior west of North America, where the Canadian Prairies and Great Plains meet various mountain ranges, although the original usage is in reference to wet, warm coastal winds in the Pacific Northwest of the United States of America.
• Bora – Green land. Cold and usually dry katabatic winds, like the Bora, result from the downslope gravity flow of cold, dense air. Katabatic flows slumping down from uplands or mountains may be funnelled and strengthened by the landscape and are then known as mountain gap wind.
• Khamsin – Egypt. Khamsin can be triggered by depressions that move eastwards along the southern parts of the Mediterranean or along the North African coast from February to June. In Egypt, khamsin usually arrives in April but occasionally occurs between March to May, carrying great quantities of sand and dust from the deserts, with a speed up to 140 kilometres per hour, and a rise of temperatures as much as 20°C in two hours.

Answer: (d)

The Sundarbans Mangroves eco-region on the coast forms the seaward fringe of the delta and is the world's largest mangrove ecosystem, with 20,400 square kilometres of the area covered.

The dominant mangrove species Heritiera fomes is locally known as sundri or sundari.

Answer: (b)