Earth MCQ Question and Answer | Geography MCQ Question

71

How many Geo-synchronous satellites are required for uninterrupted world broadcasting?

A) 3 B) 4 C) 2 D) 1

Discuss

Answer & Solution

Answer: Option A

Solution:

In theory, 2 satellites in diametrically opposite geo-synchronous orbits could cover the planet. In order for the satellites to communicate, a minimum of 3 would be needed, each at a 60° angle to the others. At this point, the strength and quality of coverage increases proportionally to the number of satellites.

72

What is known as High Pressure Subtropical Latitude?

A) Roaring forties B) Furious fifties C) Screaming sixties D) Horse latitudes

Discuss

Answer & Solution

Answer: Option D

Solution:

The horse latitudes are subtropical regions known for calm winds and little precipitation. The horse latitudes are regions located at about 30° north and south of the equator. These latitudes are characterized by calm winds and little precipitation.

73

Consider the following statements:
1. The tropical year is shorter than the sidereal year.
2. The solar day is longer than the sidereal day.
Which of the statements given above is/are correct?

A) 1 only B) 2 only C) Both 1 and 2 D) Neither 1 nor 2

Discuss

Answer & Solution

Answer: Option C

Solution:

The tropical year is shorter than the sidereal year. A sidereal year is the time it takes for the sun to return to the same position with respect to the stars. The solar day is longer than the sidereal day. Because of the Earth's revolution, a solar day is slightly longer than a sidereal day.

74

The Synchronous satellite moves around the Earth from

A) East to West B) West to East C) North to South D) South to North

Discuss

Answer & Solution

Answer: Option B

Solution:

Synchronous satellite is an artificial satellite moving in circular orbit round the Earth in 24 hours duration along with the rotatory movement of Earth i.e. west to east.

75

What is 'Sidereal Day'?

A) The day on which the duration of sunshine is the maximum B) The day on which the duration of sunshine and darkness are equal C) The time during which the earth makes a complete rotation on its axis in respect of the fixed stars D) The day on which the sun reaches its maximum distance from the equator

Discuss

Answer & Solution

Answer: Option C

Solution:

The time during which the earth makes a complete rotation on its axis in respect of the fixed stars is known as 'Sidereal Day'. The sidereal day is the time it takes for the Earth to complete one rotation about its axis with respect to the 'fixed' stars.

76

The earth revolves round the sun in its orbit by approximately ________

A) 1° per day B) 2° per day C) 3° per day D) 5° per day

Discuss

Answer & Solution

Answer: Option A

Solution:

The earth revolves round the sun in its orbit by approximately 1° per day.

77

The equatorial circumference is greater than the polar circumference by approximately ________

A) 22 km B) 67 km C) 125 km D) 625 km

Discuss

Answer & Solution

Answer: Option B

Solution:

This results in the Earth having a polar circumference of 40008 km, and an equatorial circumference of 40075 km, a difference of 67 kilometers(approximately) .

78

Why does Russia have many local time differences?

A) Because it keeps trade relations with many countries of the world B) Because it experiences a wide range of climatic conditions C) Because of its long east-west stretches D) Because it is divided into a number of states on political grounds

Discuss

Answer & Solution

Answer: Option C

Solution:

Russia currently has 11 time zones, from the Kaliningrad Oblast, a Baltic enclave in the west, to the Kamchatka Krai in the Far East. Because of its long east-west stretches Russia have many local time differences.

79

Lunar eclipse does not occur every month because ________

A) The sun's orbit is not always in the same plane as the moon B) The moon revolves at a slower speed than the earth C) The moon's orbit is not all the time in the same plane as the earth D) None of these

Discuss

Answer & Solution

Answer: Option C

Solution:

They do not happen every month because the Earth's orbit around the sun is not in the same plane as the Moon's orbit around the Earth.

80

A person sets off from Alaska on a Tuesday and reaches New Zealand the next day which will be ________

A) Tuesday B) Wednesday C) Thursday D) Friday

Discuss

Answer & Solution

Answer: Option C

Solution:

A person sets off from Alaska on a Tuesday and reaches New Zealand the next day which will be Thursday.