Question 8 [Fill in the blanks] - MCQ Questions (1 Mark) - Chapter 2 Class 6 Geography - Latitudes and Longitudes - Geography

Earth has been divided into ___________ time zones of ___________hour each.

A. 36, half

B. 12, two

C. 24, one

D. 48, quarter

Answer:

Answer by Student

The correct answer is (C) 24, one .

Detailed Explanation by Teachoo

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< IMAGE PROMPT: a map of the world showing the different time zones and their names >

Let’s check all the options and see why they are correct or incorrect.

• Option (A) 36, half - If the Earth was divided into 36 time zones of half an hour each, then each time zone would cover 10 degrees of longitude (360/36 = 10). However, this is not how the Earth is divided. The Earth is divided into 24 time zones of one hour each, which means each time zone covers 15 degrees of longitude (360/24 = 15). So, this option is incorrect .
• Option (B) 12, two - If the Earth was divided into 12 time zones of two hours each, then each time zone would cover 30 degrees of longitude (360/12 = 30). However, this is not how the Earth is divided. The Earth is divided into 24 time zones of one hour each, which means each time zone covers 15 degrees of longitude (360/24 = 15). So, this option is incorrect .
• Option (C) 24, one - The Earth is divided into 24 time zones of one hour each, which means each time zone covers 15 degrees of longitude (360/24 = 15). The time at the prime meridian (0 degree longitude) is called Greenwich Mean Time (GMT) or Coordinated Universal Time (UTC). All other time zones are calculated by adding or subtracting hours from GMT based on their longitude. For example, India is at about 82.5 degrees east of the prime meridian, which means its time is GMT + 5.5 hours. So, this option is correct .
• Option (D) 48, quarter - If the Earth was divided into 48 time zones of quarter an hour each, then each time zone would cover 7.5 degrees of longitude (360/48 = 7.5). However, this is not how the Earth is divided. The Earth is divided into 24 time zones of one hour each, which means each time zone covers 15 degrees of longitude (360/24 = 15). So, this option is incorrect .

Thus, option (C) is correct .

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