world physical geography section 2 MCQ Questions & Answers Detailed Explanation

Answer: (a)

The Pacific Ring of Fire is an area where a large number of earthquakes and volcanic eruptions occur in the basin of the Pacific Ocean. In a 40,000 km horseshoe shape, it is associated with a nearly continuous series of oceanic trenches, volcanic arcs, and volcanic belts and/or plate movements.

The Ring of Fire has 452 volcanoes and is home to over 75% of the world’s active and dormant volcanoes. It is sometimes called the circum-Pacific belt or the circumPacific seismic belt. About 90% of the world’s earthquakes and 81% of the world’s largest earthquakes occur along the Ring of Fire.

The next most seismic region (5–6% of earthquakes and 17% of the world’s largest earthquakes) is the belt which extends from Java to Sumatra through the Himalayas, the Mediterranean, and out into the Atlantic. The Mid-Atlantic Ridge is the third most prominent earthquake belt.

Answer: (b)

Sirocco originates in the Sahara and blows across the Mediterranean Sea into southern Europe. It arises from a warm, dry, tropical airmass in the Arabian or Sahara deserts that is pulled northward by lowpressure cells moving eastward across the Mediterranean Sea.

Answer: (b)

The continent Antarctica is present at the highest mean elevation in the world. This is because it is covered by a huge layer of ice, about 7,100 feet (2,200 m) thick.

Answer: (a)

The largest expanse of tropical rain forest is found in the Amajon basin of Brazil, extending from the Atlantic Coast of the foot hills of the Ande and from the Guiana Highlands in the north to the tropic of Capricorn in the South.

Answer: (d)

The Sahara covers most of North Africa and extends over Algeria, Chad, Egypt, Libya, Mali, Mauritania, Morocco, Niger, Western Sahara, Sudan and Tunisia. It covers about 1D 4 of the African continent.

Answer: (b)

1. Jabalpur: Narmada;
2. Paris: Seine;
3. London: Thames; and
4. Lahore: Ravi

The river flows on the north-western side.