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1 Which one of the following is the cause of long-term sea-level change?

Atmospheric disturbance Change in marine water density Melting of icebergs Melting of ice sheets

2 Which one of the following is a continental shelf sea?

North Sea Arabian sea Red sea Mediterranean Sea

3 The ‘Water table’ refers to

The lower limit of the zone of saturation The upper limit of the zone of saturation The contact zone of permeable and impermeable rock Seepage of water into fissures lying below the earth’s surface

4 Which one of the following combination is responsible for higher salinity in ocean water?

High evaporation, high temperature and low rainfall High evaporation, high temperature and low rainfall Low evaporation, low temperature and high rainfall Low evaporation, low temperature and low rainfall

5 The most important fishing grounds of the world are found in the regions where

Warm and cold atmospheric currents meet Rivers drain out large amounts of freshwater into the sea Warm and cold oceanic currents meet Continental shelf is undulating

6 Which one of the following is a warm ocean current?

Labrador Gulf stream Kurile Canary

7 The largest current because of its dark waters is known as the ‘black current’ and that is

California current Antarctic current Gulf stream Kuroshio current

8 The ocean currents transfer heat from

One sea or ocean to another One coast to another The surface of the sea to greater depths Lower to high latitudes

9 The ocean surface currents follow clockwise circulatory paths in the northern parts of the Pacific and Atlantic oceans due to the

Convergence and divergence movements Coriolis force Density differences in sea water Impact of prevailing winds

10 Which of the following Seas has highest salinity in the world?

Mediterranean Sea Black Sea Dead Sea Red Sea

11 When water freeze in the polar seas the salts

Form a layer on top Remain in the substance water that does not freeze Sink to the bottom Partly freeze and partly sink to the bottom

12 Neap tides occur during which of the following phases of the moon?

First quarter only First and third quarter Second and third quarter Fourth quarter only

13 Tides in the sea have stored in them

Gravitational potential energy A combination of all the three forms of energy Hydraulic energy Kinetic energy

14 Tidal range denote the

Rise of sea water and its movement toward the coast Fall of sea water and its movement toward the sea Rise and fall of sea water due to gravitational forces Difference between high and low tide

15 The continent having the largest area in the equatorial belt is

Asia South America Africa North America

16 Which of the following statements with regard to the continental shelf is NOT correct?

Shelves are absent close to plate boundaries They are highly sedimented They have abrupt falls towards the continental slopes They are rich fishing areas

17 Abyssal plains are

Small and unproductive plains caused by the turbidity currents Vast and flat plains caused by the turbidity currents Vast but unusually rough terrained plains caused by the turbidity currents All of the above

18 Which one of the following countries does not border Mediterranean Sea?

Malta Libya Italy Bulgaria

19 The busiest and the most important sea route of the world is

North Pacific Sea Route North Atlantic Sea Route South Atlantic Sea Rout Indian Ocean Route

20 The winter temperatures of north-western Europe are higher than those of eastern Europe in the same latitudinal zone because

It is on the western side of the continent It is near the sea It receives only light falls of snow It lies under westerly winds which blow over the Gulf Stream Drift

21 Coral reefs are formed by

Volcanic rocks Marine sediments Chlorine material precipitated from sea water Tiny colonial marine animals which construct limestone skeleton material

22 Which one of the following is not a permanent lake?

Ox-bow lake Playa lake Caldera lake Cirque lake

23 The longest river is Asia is

River Indus River Yangtze River Hwang Ho River Ganga

24 Which of the following pairs is not correctly matched

Algeria – Niger Brazil – Amazon Iraq – Tigris Myanmar – Irrawad

25 Suez canal joins

Persian Gulf and Arabian Sea Red Sea and Mediterranean Sea Mediterranean Sea and Black Sea Red Sea and Arabian Sea

26 Ozone layer of the Earth’s atmosphere is important for living organisms because it

Prevents entry of ultra-violet rays Prevents entry of X-ray Maintains level of oxygen on Earth Prevents acid rain on Earth

27 Which one of the following statements about the atmosphere is correct?

The atmosphere has definite upper limits but gradually thins until it becomes imperceptible The atmosphere has no definite upper limits but gradually thins until it becomes imperceptible The atmosphere has definite upper limits but gradually thickens until it becomes imperceptible The atmosphere has no definite upper limits but gradually thickens until it becomes imperceptible

28 The equator does not pass through which of the following countries?

Kenya Mexico Indonesia Brazil

29 Which one of the following is a significant contributor to increased levels of atmospheric carbon dioxide?

Refrigerant leakage Large rice paddies Aerosol spray can gases Deforestation

30 Which one of the following layers of atmosphere has high concentration of ions?

Stratosphere Exosphere Thermosphere Troposphere

31 On a clear winter night, earth is cooled by

Conduction Convection Radiation Condensation

32 Horse latitudes lie within the atmospheric pressure belts of

Polar high Equatorial low Sub-tropical high Sub-polar low

33 “Climate is extreme, rainfall is scanty and the people used to be nomadic herders”. This statement best describes which of the following region

African Savannah Central Asian Steppe North American Prairi Siberian Tundra

34 Which one of the following types of clouds is a low level cloud

Cirrus Cirrocumulus Stratocumulus Altocumulus

Test 4

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Questions 1 - 34