Consider the following calculation regarding Earth's rotation: 1. The Earth rotates 360° in about 24 hours. 2. The Earth rotates 25° in one hour. 3. The Earth rotates 1° in four minutes. Which of the statements given above is/are correct?

The correct option is (c). Explanation The Earth rotates on its axis from west to east. This rotation is the basis for the measurement of time and the determination of longitudes. A complete rotation constitutes a solar day. - Statement 1 is Correct: The Earth completes one full rotation on its axis, covering 360°, in approximately 24 hours. - Statement 2 is Incorrect: The rate of rotation per hour is calculated by dividing the total degrees by the total time: 360° ÷ 24 hours = 15° per hour. Therefore, the Earth rotates 15° in one hour, not 25°. - Statement 3 is Correct: Since the Earth rotates 15° in 60 minutes (1 hour), the time taken to cover 1° is calculated as: 60 minutes ÷ 15 = 4 minutes. Thus, the Earth rotates 1° every 4 minutes. Key Takeaway: The Earth rotates at a speed of 15° per hour, which equates to 1° every 4 minutes. This relationship is essential for calculating local time differences between longitudes.

NCERT Class 6 Geography — Chapter 1: Globe: Latitudes and Longitudes

mcqeasy

Consider the following calculation regarding Earth's rotation:

The Earth rotates 360° in about 24 hours.
The Earth rotates 25° in one hour.
The Earth rotates 1° in four minutes.

Which of the statements given above is/are correct?

Official previous-year question

Verified 1 Aug 2026.

Options

A1 and 2 only
B2 only
C1 and 3 only
D1, 2 and 3

Did you get this right?

Solution

The correct option is (c).

Explanation

The Earth rotates on its axis from west to east. This rotation is the basis for the measurement of time and the determination of longitudes. A complete rotation constitutes a solar day.

Statement 1 is Correct: The Earth completes one full rotation on its axis, covering 360°, in approximately 24 hours.
Statement 2 is Incorrect: The rate of rotation per hour is calculated by dividing the total degrees by the total time:
360° ÷ 24 hours = 15° per hour.
Therefore, the Earth rotates 15° in one hour, not 25°.
Statement 3 is Correct: Since the Earth rotates 15° in 60 minutes (1 hour), the time taken to cover 1° is calculated as:
60 minutes ÷ 15 = 4 minutes.
Thus, the Earth rotates 1° every 4 minutes.

Key Takeaway: The Earth rotates at a speed of 15° per hour, which equates to 1° every 4 minutes. This relationship is essential for calculating local time differences between longitudes.

Your note

More from Chapter 1: Globe: Latitudes and Longitudes

Consider the following statements regarding the naming of latitudes: 1. All parallels north of the equator are called 'north latitudes'. 2. All parallels south of the equator are called 'western latitudes'. 3. The value of latitude is followed by the letter 'N' or 'S'. Which of the statements given above is/are correct?

easy

Which of the following statements is correct regarding the "Torrid Zone"?

easy

With reference to the shape of the Earth, consider the following statements: 1. The Earth is a perfect sphere with no irregularities. 2. It is slightly flattened at the North and South Poles. 3. It has a bulge in the middle. Which of the statements given above is/are correct?

easy

Consider the following statements regarding the Globe: 1. It is a true miniature model of the Earth. 2. On a globe, countries and continents are shown in their correct size, but oceans are not. 3. The globe is fixed and cannot be rotated. Which of the statements given above is/are correct?

medium

With reference to the axis of the Earth, consider the following statements: 1. The axis is a real needle passing through the North and South Poles. 2. The Earth moves around its axis from West to East. 3. The axis is an imaginary line. Which of the statements given above is/are correct?

medium

Keep practising Chapter 1: Globe: Latitudes and Longitudes

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The correct option is (c).

Explanation

The Earth rotates on its axis from west to east. This rotation is the basis for the measurement of time and the determination of longitudes. A complete rotation constitutes a solar day.

Statement 1 is Correct: The Earth completes one full rotation on its axis, covering 360°, in approximately 24 hours.
Statement 2 is Incorrect: The rate of rotation per hour is calculated by dividing the total degrees by the total time:
360° ÷ 24 hours = 15° per hour.
Therefore, the Earth rotates 15° in one hour, not 25°.
Statement 3 is Correct: Since the Earth rotates 15° in 60 minutes (1 hour), the time taken to cover 1° is calculated as:
60 minutes ÷ 15 = 4 minutes.
Thus, the Earth rotates 1° every 4 minutes.

Key Takeaway: The Earth rotates at a speed of 15° per hour, which equates to 1° every 4 minutes. This relationship is essential for calculating local time differences between longitudes.