world physical geography section 3 MCQ Questions & Answers Detailed Explanation

Answer: (a)

All the above statements are correct.

Answer: (b)

1. The United States of America (22.6%),
2. Russia (14.4%) and China (12.6%) together account for about 50 per cent of the global coal deposits.
3. Australia (8.9%) and India (7.0%) come next.

In terms of coal production, China, the USA and India are the world’s topmost countries.

Answer: (b)

The Grand Canyon is a steep-sided canyon carved by the Colorado River in the United States in the state of Arizona.

For thousands of years, the area has been continuously inhabited by Native Americans.

Answer: (d)

1. An epiphyte is a plant that grows harmlessly upon another plant (such as a tree) and derives its moisture and nutrients from the air, rain. Epiphytes provide a rich and diverse habitat for other organisms including animals, fungi, bacteria etc. Selvas is found in South America.
2. Savanna is a rolling grassland scattered with shrubs and isolated trees, which can be found between a tropical rainforest and desert biome. Savanna is found in Africa, South America, India, and Australia.
3. Tundra is a type of biome where tree growth is hindered by low temperatures and short growing seasons. Tundra is the coldest of all the biomes. The vegetation is composed of dwarf shrubs, sedges and grasses, mosses, and lichens.
4. Tropophytesis a kind of plant adapted to climatic conditions in which periods of heavy rainfall alternate with periods of drought. It grows in monsoon land.

Answer: (a)

Mount Gamkonora is a strato-volcano on Halmahera island, Indonesia. With an elevation of 1,560 metres, it is the highest peak on the island. It has produced an elongated series of craters along the north-south rift.

The largest eruption in 1673 was accompanied by a tsunami that inundated the nearby villages. The volcano erupted again on July 10, 2007, with over 8,000 people reported to have fled their homes in the vicinity.

Answer: (b)

The Gulf Stream, together with its northern extension towards Europe, the North Atlantic Drift, is a powerful, warm, and swift Atlantic ocean current that originates at the tip of Florida, and follows the eastern coastlines of the United States and Newfoundland before crossing the Atlantic Ocean.

It influences the climate of the east coast of North America from Florida to Newfoundland and the west coast of Europe.