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Geo-Tectonics - Geography GK Multiple Choice Questions with Answers | Page-8

Questions
36 In which direction the Earth rotates around its axis ?
A north to south
B east to west
C west to east
D randomly

Answer: Option [C]

The correct answer is west to east. Earth rotates from west to east. Therefore, in terms of time the eastern part of the earth is ahead of the western part.

37 Mohs scale is used to determine :
A degree of brightness of a substance
B degree of hardness of minerals
C degree of viscosity of a liquid
D degree of elasticity of a material

Answer: Option [B]

Mohs scale is used to determine degree of hardness of minerals. Mohs scale is a scale used to measure the relative hardness of a mineral by its resistance to scratching. From softest to hardest, the ten minerals of the Mohs scale are talc (measuring 1 on the scale), gypsum, calcite, fluorite, apatite, orthoclase, quartz, topaz, corundum, and diamond (measuring 10 on the scale).

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38 In which situation Spring tides can occur :
A the moon, sun and the earth are at right angles with the earth at the apex
B the moon is farthest from the earth
C the sun is closest to the earth
D the moon, the sun and the earth in the same line

Answer: Option [D]

The correct answer is the moon, the sun and the earth in the same line. Spring tides always happen when the Moon is at the full or new phase, which is when the Sun, Moon and Earth are in alignment. Neap tides occur around the first and last quarter phase of the Moon, when the Moon's orbit around Earth brings it perpendicular to the Sun.

39 Total surface area of the earth in square kilometer is :
A 510.1 million square kilometer
B 512.8 million square kilometer
C 520 million square kilometer
D 525.7 million square kilometer

Answer: Option [A]

Total surface area of the earth in square kilometer is 510.1 million square kilometer. According to modern estimates, the surface area of the Earth is approximately 510 million square km (5.1 x 108 km2) or 196,900,000 square miles.

40 The Earth while rotates around the Sun It always keeps its axis pointed towards :
A the moon
B the pole star
C Venus
D the sun

Answer: Option [B]

The Earth while rotates around the Sun It always keeps its axis pointed towards the pole star. The earth, while rotating around the sun, always keeps its axis pointed towards the Pole Star. The Pole Star is a bright star that is always directly above the north pole and which remains in the same position round the clock and throughout the year in the sky.

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