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91
One degree of longitude on the equator is equal to a distance of ________
Discuss
Answer & Solution
Answer: Option D
Solution:
One degree of longitude on the equator is equal to a distance of 69 miles.
92
How much is the difference of time between any two consecutive longitudes?
Discuss
Answer & Solution
Answer: Option C
Solution:
4 minutes is the difference of time between any two consecutive longitudes. The difference between the two longitudes that are adjacent is 4 minutes.
93
Albedo is defined as ________
Discuss
Answer & Solution
Answer: Option D
Solution:
Albedo is defined as the amount of insolation reflected back to the space by the top of atmosphere, by clouds and ice-covered areas of the Earth's surface.
94
When the clock strikes 12:00 noon at Greenwich, it strikes 5:30 p.m. at place X on the same day. What is the meridian of longitude of place X ?
Discuss
Answer & Solution
Answer: Option C
Solution:
When the clock strikes 12:00 noon at Greenwich, it strikes 5:30 p.m. at place X on the same day. 82°30' E is the meridian of longitude of place X.
95
The approximate diameter of the earth is ________
Discuss
Answer & Solution
Answer: Option C
Solution:
The approximately diameter of Earth is 12800 km. The rotation of the planet has slightly flattened it out, so it has a larger diameter at the equator than at the poles. The equatorial diameter of Earth is 12,756 km, its polar diameter is 12,713 km, and its average diameter, which is referred to in common usage, is 12,742 km or 7,926 miles.
96
The speed of rotation of the earth is ________
Discuss
Answer & Solution
Answer: Option D
Solution:
The speed of rotation of the earth is 29.72 km/sec.
97
The area of the Earth's total surface is of the order of ________.
Discuss
Answer & Solution
Answer: Option A
Solution:
The total surface area of the Earth is 510 million square km while that of India is 3.825 million square km.
98
The distance of the equator from either of the poles is ________
Discuss
Answer & Solution
Answer: Option C
Solution:
The distance of the equator from either of the poles is 10,002 km.
99
The Earth rotates-around an axis pointing towards ________
Discuss
Answer & Solution
Answer: Option B
Solution:
The Earth rotates-around an axis pointing towards the Pole star. The axis of rotation of the Earth passes very close to the Pole Star. The earth rotates around the sun, but the polar star is always in the north.
100
When a ship crosses Date line from west to east ________
Discuss
Answer & Solution
Answer: Option B
Solution:
When a ship crosses the International Date Line from west to east, it adds a day, and if it crosses the line from east to west, it subtracts a day.