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SEBA Class 7 Social Science MCQ Chapter 1 Calculation of Time on Earth
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Calculation of Time on Earth
Chapter – 1
GEOGRAPHY
| MCQ |
1. What is the total number of longitudes on Earth at 1° intervals?
(A) 180
(B) 360
(C) 90
(D) 120
Answer: (B) 360
2. The Indian Standard Time (IST) is calculated based on which longitude?
(A) 75°E
(B) 90°E
(C) 82.5°E
(D) 60°E
Answer: (C) 82.5°E
3. How many hours does the Earth need to make a complete rotation of 360°?
(A) 12 hours.
(B) 24 hours.
(C) 48 hours.
(D) 6 hours.
Answer: (B) 24 hours.
4. What is the value of the Prime Meridian passing through Greenwich?
(A) 90° longitude.
(B) 45° longitude.
(C) 0° longitude.
(D) 30° longitude.
Answer: (C) 0° longitude.
5. What is the unit of angular distance?
(A) Kilometres.
(B) Degrees.
(C) Miles.
(D) Metres.
Answer: (B) Degrees.
6. The circumference of the Earth makes an angle of ____ at its centre.
(A) 180 degrees.
(B) 360 degrees.
(C) 90 degrees.
(D) 270 degrees.
Answer: (B) 360 degrees.
7. The measurement of the line of longitude is called ____.
(A) Latitude.
(B) Longitude.
(C) Equator.
(D) Meridian.
Answer: (B) Longitude.
8. If a place is 15°E from the midday sun, the time at that place will be ____.
(A) 1 hour ahead.
(B) 1 hour behind.
(C) 2 hours ahead.
(D) 2 hours behind.
Answer: (A) 1 hour ahead.
9. Time in each longitude to the east of the Prime Meridian goes ahead by ____ minutes.
(A) Four.
(B) Five.
(C) Ten.
(D) Fifteen.
Answer: A) Four.
10. The east longitude of ____ is accepted as the Indian Standard longitude.
(A) 83°20′
(B) 90°
(C) 82°30′
(D) 75°
Answer: (C) 82°30′
11. Latitude lines are known as ____.
(A) Parallels.
(B) Meridians.
(C) Longitudes.
(D) Equators.
Answer: (A) Parallels.
12. Local time is calculated based on the position of the ____.
(A) Moon.
(B) Stars.
(C) Sun.
(D) Planets.
Answer: (C) Sun.
13. The time at the Prime Meridian is known as ____.
(A) Local Time.
(B) Indian Standard Time.
(C) Greenwich Mean Time.
(D) Universal Time.
Answer: (C) Greenwich Mean Time.
14. Standard Time is calculated based on the ____ longitude.
(A) Prime Meridian.
(B) Standard Meridian.
(C) Equator.
(D) Tropic of Cancer.
Answer: (B) Standard Meridian.
15. The local time at the Prime Meridian is called ____.
(A) GMT (Greenwich Mean Time).
(B) IST (Indian Standard Time).
(C) PST (Pacific Standard Time).
(D) MST (Mountain Standard Time).
Answer: A) GMT.
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