Who amongst the following was the first to state that the Earth was spherical?
- (a)Aristotle
- (b)Copernicus
- (c)Ptolemy
- (d)Strabo
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Official answer(a) Aristotle
Other questions on Astronomy & Earth–Sun System
Consider the following water bodies : I. Lake Tanganyika II. Lake Tonlé Sap III. Patos Lagoon Through how many of them does the equator pass?
- (a)Only one
- (b)Only two
- (c)All the three
- (d)None
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Official answer(d) None
Consider the following statements : Statement I : Scientific studies suggest that a shift is taking place in the Earth’s rotation and axis. Statement II : Solar flares and associated coronal mass ejections bombarded the Earth’s outermost atmosphere with tremendous amount of energy. Statement III : As the Earth’s polar ice melts, the water tends to move towards the equator. Which one of the following is correct in respect of the above statements?
- (a)Both Statement II and Statement III are correct and both of them explain Statement I
- (b)Both Statement II and Statement III are correct but only one of them explains Statement I
- (c)Only one of the Statements II and III is correct and that explains Statement I
- (d)Neither Statement II nor Statement III is correct
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Official answer(b) Both Statement II and Statement III are correct but only one of them explains Statement I
Consider the following statements : I. Anadyr in Siberia and Nome in Alaska are a few kilometers from each other, but when people are waking up and getting set for breakfast in these cities, it would be different days. II. When it is Monday in Anadyr, it is Tuesday in Nome. Which of the statements given above is/are correct?
- (a)I only
- (b)II only
- (c)Both I and II
- (d)Neither I nor II
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Official answer(a) I only
On June 21 every year, which of the following latitude(s) experience(s) a sunlight of more than 12 hours ? 1. Equator 2. Tropic of Cancer 3. Tropic of Capricorn 4. Arctic Circle Select the correct answer using the code given below :
- (a)1 only
- (b)2 only
- (c)3 and 4
- (d)2 and 4
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Official answer(d) 2 and 4
In the northern hemisphere, the longest day of the year normally occurs in the :
- (a)First half of the month of June
- (b)Second half of the month of June
- (c)First half of the month of July
- (d)Second half of the month of July
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Official answer(b) Second half of the month of June
Consider the following statements : 1. The Earth’s magnetic field has reversed every few hundred thousand years. 2. When the Earth was created more than 4000 million years ago, there was 54% oxygen and no carbon dioxide. 3. When living organisms originated, they modified the early atmosphere of the Earth. Which of the statements given above is/are correct ?
- (a)1 only
- (b)2 and 3 only
- (c)1 and 3 only
- (d)1, 2 and 3
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Official answer(c) 1 and 3 only