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Test: Motions of the Earth - UPSC MCQ


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10 Questions MCQ Test - Test: Motions of the Earth

Test: Motions of the Earth for UPSC 2024 is part of UPSC preparation. The Test: Motions of the Earth questions and answers have been prepared according to the UPSC exam syllabus.The Test: Motions of the Earth MCQs are made for UPSC 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Motions of the Earth below.
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Test: Motions of the Earth - Question 1

The motion of the Earth around the Sun is known as?

Detailed Solution for Test: Motions of the Earth - Question 1

Revolution is the movement of the earth around the sun in a fixed path or orbit

Test: Motions of the Earth - Question 2

Which of the following circle divides the day from the night on the Earth?

Detailed Solution for Test: Motions of the Earth - Question 2

The circle that divides the day from the night on the globe is called the circle of illumination.

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Test: Motions of the Earth - Question 3

On which of the following date, the nights are longer than the days?

Detailed Solution for Test: Motions of the Earth - Question 3
  • The nights are longer than the days. It occurs on the 22nd of December.
  • On 22nd December, the Tropic of Capricorn receives direct rays of the sun as the South Pole tilts towards it.
Test: Motions of the Earth - Question 4

Which of the following statement is correct concerning Equinox?

Detailed Solution for Test: Motions of the Earth - Question 4

On 21st March and September 23rd, direct rays of the sun fall on the equator. At this position, neither of the poles is tilted towards the sun.

Test: Motions of the Earth - Question 5

On which of the following days' equinox occur?

Detailed Solution for Test: Motions of the Earth - Question 5

EQUINOX

  • The whole earth experiences equal days and equal nights. It occurs on 21st March and September 23rd.
Test: Motions of the Earth - Question 6

Consider the following statements:

1. The movement of the Earth on its axis is called revolution
2. The movement of the Earth around the sun in a fixed path or orbit is called rotation

Q. Which of the statements given above is/are correct?

Detailed Solution for Test: Motions of the Earth - Question 6

Statement 1 is incorrect - Earth spins around its axis, just as a top spins around its spindle. This spinning movement is called the Earth's rotation.

Statement 2 is incorrect -  At the same time that the Earth spins on its axis, it also orbits or revolves around the Sun. This movement is called the revolution.

Test: Motions of the Earth - Question 7

What would happen if the earth did not rotate?

  1. Life would not have been possible
  2. There would be no season.
  3. There would be no leap year.
  4. There would be no day and night.

Q. Select the correct answer using the codes given below:

Detailed Solution for Test: Motions of the Earth - Question 7

The correct options is B. Statement 1 and Statement 4
Life would not have been possible. There would be no day and night.
If Earth did not rotate on its axis, one side would always face the Sun while the other side would be away from the Sun. Thus, one side would become very hot and the other side would become very cold. Ultimately, life would not have been possible under such circumstances. However, the formation of seasons and the occurrence of leap years take place due to the revolution of the Earth and not due to the rotation of the Earth.

Test: Motions of the Earth - Question 8

Which of the following statement is correct regarding the winter Solstice?

Detailed Solution for Test: Motions of the Earth - Question 8
  • The nights are longer than the days during the winter solstice. It occurs on the 22nd of December.
  • On 22nd December, the Tropic of Capricorn receives direct rays of the sun as the South Pole tilts towards it.
Test: Motions of the Earth - Question 9

Why are days and nights are equal at all places on Earth on September 23rd?

Detailed Solution for Test: Motions of the Earth - Question 9

EQUINOX

  • The whole earth experiences equal days and equal nights. It occurs on 21st March and September 23rd.
  • On 21st March and September 23rd, direct rays of the sun fall on the equator. At this position, neither of the poles is tilted towards the sun.
Test: Motions of the Earth - Question 10

Consider the following statements:

1. Earth takes 365 days for it to revolve around the sun.
2. Earth goes around the sun in an elliptical orbit.

Q. Which of the statements given above is/are correct?

Detailed Solution for Test: Motions of the Earth - Question 10

Statement 1 is incorrect - Earth takes 365¼ days for it to revolve around the sun.

Statement 2 is correct - Earth goes around the sun in an elliptical orbit. Note that throughout its orbit, the earth is inclined in the same direction.

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