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11
The Earth is an oblate spheroid and not a perfect sphere. This is because
1. the Earth has a rotational motion and the rotational speed increases as one goes from the Poles towards the Equator.
2. the Equator experiences greater gravitational pull from the Sun.
3. the intensity of sunlight received at the Equator is greater than that at the Poles.
Discuss
Answer & Solution
Answer: Option B
Solution:
The Earth is an oblate spheroid and not a perfect sphere. This is because the Earth has a rotational motion and the rotational speed increases as one goes from the Poles towards the Equator and the Equator experiences greater gravitational pull from the Sun.
12
Which of the following countries are located on the Greenwich Meridian?
1. Algeria
2. Germany
3. Guinea
4. Iceland
Discuss
Answer & Solution
Answer: Option A
Solution:
he Greenwich Meridian, also known as the Prime Meridian, is the line of 0° longitude. It passes through Greenwich, London, and serves as the starting point for measuring both longitude and Coordinated Universal Time (UTC). Among the given options:

Algeria: Yes, it is located on the Greenwich Meridian.
Germany: No, Germany is located to the east of the Greenwich Meridian.
Guinea: No, Guinea is located to the west of the Greenwich Meridian.
Iceland: No, Iceland is located to the west of the Greenwich Meridian.

Therefore, only option 1 (Algeria) is located on the Greenwich Meridian.
13
Owing to the equatorial bulge and the polar flattening, the polar radius of the earth falls short of the equatorial radius by about ________
Discuss
Answer & Solution
Answer: Option A
Solution:
Owing to the equatorial bulge and the polar flattening, the polar radius of the earth falls short of the equatorial radius by about 22 km.
14
Which one of the following is the correct sequence of the given continents in the decreasing order of their percentage of Earth's land?
Discuss
Answer & Solution
Answer: Option B
Solution:
The correct sequence of the given Continents in the decreasing order of their percentage of Earth's land are Africa – North America – South America – Europe.
15
What is the approximate equatorial circumference of the earth?
Discuss
Answer & Solution
Answer: Option C
Solution:
The approximate equatorial circumference of the earth is 40000 km.
16
Who among the following was first to measure the circumference of the Earth?
Discuss
Answer & Solution
Answer: Option A
Solution:
Eratosthenes of Cyrene, 276 BC- 195 BC, was a Greek mathematician, geographer, poet, athlete, astronomer, and music theorist. He was the first person to use the word “geography” in Greek and he invented the discipline of geography as we understand it. He invented a system of latitude and longitude. He was the first person to calculate the circumference of the earth by using a measuring system using stades, or the length of stadiums during that time period (with remarkable accuracy).
17
What is the circumference of the Earth?
Discuss
Answer & Solution
Answer: Option D
Solution:
The approximate equatorial circumference of the earth is 40000 km.
18
Who was the first to measure the circumference of the Earth?
Discuss
Answer & Solution
Answer: Option C
Solution:
Eratosthenes was the first person to calculate the size of the earth. He was also the first person to use the word “Geography”.
19
Beirut time is two hours ahead and Lima time is five hours behind GMT. The longitudes of Beirut and Lima are respectively ________
Discuss
Answer & Solution
Answer: Option C
Solution:
Beirut time is two hours ahead and Lima time is five hours behind GMT. The longitudes of Beirut and Lima are respectively 30° East and 75° West.
20
The total surface area of earth is ________
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.