Geography GK Questions with Answers – Page 37

Tides are the regular rise and fall of sea level caused mainly by the gravitational pull of the Moon, and to a lesser extent the Sun, on the Earth.

The Precambrian covers all of Earth's history from its formation about 4.6 billion years ago to the start of the Cambrian about 541 million years ago.

The Caspian has no natural outlet to any ocean, so it is a landlocked water body, in fact the largest inland body of water on Earth.

Parallels shrink as they move towards the poles, so the 0° parallel, the Equator, is the longest of all. Parallels of latitude are circles drawn parallel to the Equator.

Weather maps and reports in India give atmospheric pressure in millibars, the same value as hectopascals. Air pressure is the weight of the air column pressing on a unit area.

The Harmattan blows over West Africa towards the Gulf of Guinea, far from the Mediterranean. The Harmattan is a dry, dusty north-easterly trade wind that blows from the Sahara across West Africa between November and March.

Population ageing is the process by which the share of older people becomes proportionately larger, not lesser, so statement 1 is false, while statement 2 is true.

Moving from north to south across Jammu and Kashmir and Ladakh, these ranges appear in exactly this order. The Karakoram, the northernmost, holds K2 (Godwin Austen), India's highest peak, and large glaciers such as the Siachen.

NW-1 is on the Ganga, NW-10 on the Amba river in Maharashtra and NW-100 on the Tapi, so all three pairs are correctly matched.

Neap tides come when the Sun and the Moon pull at right angles to each other, so the Sun's pull partly cancels the Moon's; but two neap tides are about two weeks apart, not seven days.

Honshu is the largest of Japan's islands, the main island on which Tokyo, Osaka, Kyoto and Mount Fuji are found.

The Cayman Trench lies in the Caribbean Sea and the South Sandwich Trench in the South Atlantic, so neither of them is in the Pacific Ocean.

Both statements are true, but the direction in which the Earth spins does not explain why tides occur. Tides are caused mainly by the Moon's pull, with the Sun adding a smaller pull; the Moon's tide-raising force is roughly twice the Sun's because it is so much closer.

Its heavy rainfall, warm humid foothills and low population give it the largest stretch of dense evergreen forest among these states.

Statement 4 is wrong: the Mid-Atlantic Ridge rises thousands of metres above the ocean floor, not thirty-three metres. The ocean floor has relief as varied as the land.

Potholes are drilled into a stream's rocky bed by pebbles and boulders that the swirling water grinds against the rock.

All three statements correctly describe the Northern Plains of India. The Northern Plains were built from alluvium laid down by the Indus, the Ganga and the Brahmaputra and their tributaries, which together drain the Himalayas.

Mudflow and slump happen quickly enough to be seen, while creep and solifluction are slow movements noticed only over long periods.

That is exactly what a port of call is. Ports of call first grew up as stopping points on the great ocean routes, where ships halted to take on fuel, fresh water and provisions before the next long leg of the voyage.

Because the axis is tilted, each hemisphere leans towards the Sun for part of the year and away from it for the rest, which brings the seasons.