Q. If a river's width increases from 50 meters to 100 meters while maintaining the same depth of 3 meters, what is the change in cross-sectional area? (2022)
A.
150 m²
B.
200 m²
C.
300 m²
D.
400 m²
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Solution
Initial area = 50 m × 3 m = 150 m²; Final area = 100 m × 3 m = 300 m²; Change = 300 m² - 150 m² = 150 m².
Correct Answer:
C
— 300 m²
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Q. If a river's width is doubled and the depth remains the same, how does this affect the cross-sectional area? (2021)
A.
It remains the same
B.
It doubles
C.
It triples
D.
It quadruples
Show solution
Solution
Cross-sectional area = Width x Depth. If width is doubled, the area also doubles.
Correct Answer:
B
— It doubles
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Q. If a riverbank erodes at a rate of 2 meters per year, how much will it erode in 5 years? (2023)
A.
5 m
B.
10 m
C.
15 m
D.
20 m
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Solution
Erosion = rate × time = 2 m/year × 5 years = 10 m.
Correct Answer:
B
— 10 m
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Q. If it is 10:00 AM at 90°W, what is the time at 60°E?
A.
1:00 PM
B.
2:00 PM
C.
3:00 PM
D.
4:00 PM
Show solution
Solution
The total difference is 90° + 60° = 150°. Therefore, the time difference is 150° / 15° = 10 hours. So, it is 10:00 AM + 10 hours = 8:00 PM.
Correct Answer:
C
— 3:00 PM
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Q. If it is 10:00 AM at 90°W, what time is it at 30°E?
A.
2:00 PM
B.
3:00 PM
C.
4:00 PM
D.
5:00 PM
Show solution
Solution
The total distance is 90° + 30° = 120°. The time difference is 120° * 4 minutes = 480 minutes = 8 hours. Therefore, 10:00 AM + 8 hours = 6:00 PM.
Correct Answer:
C
— 4:00 PM
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Q. If it is 12:00 noon at the Prime Meridian (0 degrees longitude), what time is it at 45 degrees East longitude? (2020)
A.
6:00 AM
B.
12:00 PM
C.
6:00 PM
D.
3:00 PM
Show solution
Solution
At 45 degrees East, it is 45/15 = 3 hours ahead. Therefore, it is 12:00 PM + 3 hours = 3:00 PM.
Correct Answer:
C
— 6:00 PM
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Q. If it is 12:00 noon at the Prime Meridian (0° longitude), what time is it at 120°E longitude? (2020)
A.
4:00 PM
B.
6:00 PM
C.
8:00 PM
D.
10:00 PM
Show solution
Solution
At 120°E, the time is 120° / 15° = 8 hours ahead of GMT. Therefore, it is 12:00 noon + 8 hours = 8:00 PM.
Correct Answer:
C
— 8:00 PM
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Q. If it is 12:00 noon at the Prime Meridian (0° longitude), what time is it at 45°E longitude?
A.
2:30 PM
B.
3:00 PM
C.
12:30 PM
D.
1:00 PM
Show solution
Solution
Each degree of longitude represents 4 minutes of time. Therefore, at 45°E, it is 45 * 4 = 180 minutes or 3 hours ahead, making it 3:00 PM.
Correct Answer:
B
— 3:00 PM
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Q. If it is 12:00 noon at the Prime Meridian (0° longitude), what time is it at 75°W longitude?
A.
6:00 AM
B.
7:00 AM
C.
8:00 AM
D.
9:00 AM
Show solution
Solution
Each degree of longitude represents 4 minutes of time. 75°W = 75 * 4 = 300 minutes = 5 hours. Therefore, it is 12:00 noon - 5 hours = 7:00 AM.
Correct Answer:
C
— 8:00 AM
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Q. If it is 12:00 noon at the Prime Meridian (0° longitude), what time is it at 90° East longitude? (2020)
A.
6:00 AM
B.
12:00 PM
C.
6:00 PM
D.
12:00 AM
Show solution
Solution
90° East is 6 hours ahead of the Prime Meridian (90/15 = 6), so it is 6:00 PM.
Correct Answer:
C
— 6:00 PM
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Q. If it is 3 PM in New York (75° W), what time is it in London (0° longitude)? (2020)
A.
12 PM
B.
6 PM
C.
8 PM
D.
9 PM
Show solution
Solution
New York is 75° W, which is 75/15 = 5 hours behind London. Therefore, 3 PM + 5 hours = 8 PM in London.
Correct Answer:
B
— 6 PM
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Q. If it is 3:00 PM at 90°W, what is the time at 60°E?
A.
1:00 AM
B.
1:00 PM
C.
9:00 PM
D.
9:00 AM
Show solution
Solution
The difference is 90° + 60° = 150°, which is 10 hours ahead. So, 3:00 PM + 10 hours = 1:00 AM.
Correct Answer:
C
— 9:00 PM
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Q. If it is 3:00 PM in New Delhi (77 degrees East), what time is it in London (0 degrees)?
A.
8:30 AM
B.
9:30 AM
C.
10:30 AM
D.
11:30 AM
Show solution
Solution
New Delhi is 77/15 = 5.13 hours ahead of GMT. Therefore, 3:00 PM - 5.13 hours = 9:30 AM.
Correct Answer:
B
— 9:30 AM
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Q. If it is 3:00 PM in New Delhi (77.1°E), what time is it in London (0° longitude)?
A.
9:30 AM
B.
8:30 AM
C.
10:30 AM
D.
7:30 AM
Show solution
Solution
New Delhi is 77.1°E, which is 77.1 * 4 = 308.4 minutes ahead of UTC. Therefore, it is 3:00 PM - 5 hours and 8 minutes = 9:30 AM in London.
Correct Answer:
B
— 8:30 AM
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Q. If it is 3:00 PM in New Delhi (77.2°E), what time is it in London (0° longitude)?
A.
8:30 AM
B.
9:30 AM
C.
10:30 AM
D.
11:30 AM
Show solution
Solution
New Delhi is 77.2°E, which is 77.2 * 4 minutes = 308.8 minutes ahead of GMT. Therefore, 3:00 PM - 5 hours and 8.8 minutes = 9:30 AM in London.
Correct Answer:
B
— 9:30 AM
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Q. If it is 3:00 PM in New Delhi (77°E), what time is it in London (0° longitude)?
A.
8:30 AM
B.
9:30 AM
C.
10:30 AM
D.
11:30 AM
Show solution
Solution
New Delhi is 77°E, which is 77 * 4 = 308 minutes = 5 hours and 8 minutes ahead of GMT. Therefore, 3:00 PM - 5:08 = 9:30 AM.
Correct Answer:
B
— 9:30 AM
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Q. If it is 3:00 PM in New Delhi (77°E), what time is it in London (0°)?
A.
8:00 AM
B.
9:00 AM
C.
10:00 AM
D.
11:00 AM
Show solution
Solution
New Delhi is 77°E, which is 77/15 = 5.13 hours ahead. Therefore, 3:00 PM - 5 hours = 10:00 AM in London.
Correct Answer:
A
— 8:00 AM
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Q. If it is 3:00 PM in New York (75°W), what time is it in London (0° longitude)?
A.
8:00 PM
B.
6:00 PM
C.
5:00 PM
D.
4:00 PM
Show solution
Solution
New York is 5 hours behind London. Therefore, 3:00 PM + 5 hours = 8:00 PM in London.
Correct Answer:
B
— 6:00 PM
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Q. If it is 3:00 PM in New York (GMT-5), what time is it in London (GMT+0)? (2022)
A.
8:00 AM
B.
10:00 AM
C.
12:00 PM
D.
3:00 PM
Show solution
Solution
New York is 5 hours behind London, so 3:00 PM + 5 hours = 8:00 PM in London.
Correct Answer:
B
— 10:00 AM
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Q. If it is 6:00 AM at 30° East longitude, what time is it at 120° West longitude? (2022)
A.
10:00 PM
B.
12:00 AM
C.
2:00 AM
D.
4:00 AM
Show solution
Solution
The time difference is 30 + 120 = 150 degrees. 150/15 = 10 hours. So, 6:00 AM - 10 hours = 8:00 PM previous day.
Correct Answer:
A
— 10:00 PM
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Q. If it is 6:00 AM at 45°E longitude, what is the time at 135°E longitude?
A.
8:00 AM
B.
9:00 AM
C.
10:00 AM
D.
11:00 AM
Show solution
Solution
135°E is 135/15 = 9 hours ahead. Therefore, 6:00 AM + 9 hours = 3:00 PM.
Correct Answer:
C
— 10:00 AM
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Q. If it is 6:00 AM at 75°W, what time is it at 15°E?
A.
8:00 AM
B.
9:00 AM
C.
7:00 AM
D.
10:00 AM
Show solution
Solution
75°W to 15°E is 90° apart, which is 6 hours. So, 6:00 AM + 6 hours = 12:00 PM.
Correct Answer:
A
— 8:00 AM
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Q. If it is 6:00 AM in New York (75°W), what time is it in London (0° longitude)? (2022)
A.
11:00 AM
B.
12:00 PM
C.
1:00 PM
D.
2:00 PM
Show solution
Solution
New York is 5 hours behind London. Therefore, if it is 6:00 AM in New York, it is 6:00 AM + 5 hours = 11:00 AM in London.
Correct Answer:
B
— 12:00 PM
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Q. If it is 6:00 PM in New Delhi (77.1°E), what is the time in London (0° longitude)?
A.
1:30 PM
B.
12:30 PM
C.
2:30 PM
D.
3:30 PM
Show solution
Solution
New Delhi is 5 hours and 30 minutes ahead of GMT, so 6:00 PM - 5:30 = 12:30 PM.
Correct Answer:
B
— 12:30 PM
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Q. If it is 6:00 PM in New Delhi (77°E), what time is it in London (0°)?
A.
12:00 PM
B.
1:30 PM
C.
2:30 PM
D.
3:30 PM
Show solution
Solution
The time difference is 77° * 4 = 308 minutes or approximately 5 hours and 8 minutes. Therefore, 6:00 PM - 5 hours = 1:00 PM.
Correct Answer:
B
— 1:30 PM
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Q. If it is 8:00 AM in New York (75°W), what time is it in London (0°)? (2022)
A.
1:00 PM
B.
12:00 PM
C.
11:00 AM
D.
10:00 AM
Show solution
Solution
The time difference is 5 hours. Therefore, it is 8:00 AM + 5 hours = 1:00 PM in London.
Correct Answer:
A
— 1:00 PM
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Q. If it is 9:00 AM at 90°W, what is the time at 30°E?
A.
3:00 PM
B.
1:00 PM
C.
5:00 PM
D.
11:00 AM
Show solution
Solution
90°W to 0° is 6 hours ahead, and 0° to 30°E is 2 hours ahead, total = 8 hours ahead, so 9:00 AM + 8 hours = 5:00 PM.
Correct Answer:
A
— 3:00 PM
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Q. If it is noon at the Prime Meridian (0° longitude), what time is it at 90° East longitude? (2020)
A.
6 AM
B.
3 PM
C.
12 PM
D.
9 AM
Show solution
Solution
90° East is 90/15 = 6 hours ahead of the Prime Meridian. Therefore, if it is noon at the Prime Meridian, it is 6 PM at 90° East.
Correct Answer:
B
— 3 PM
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Q. If the atmospheric pressure at sea level is 1013 hPa, what is the pressure at 5000 meters altitude approximately?
A.
500 hPa
B.
700 hPa
C.
800 hPa
D.
900 hPa
Show solution
Solution
The atmospheric pressure at 5000 meters is approximately 700 hPa.
Correct Answer:
B
— 700 hPa
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Q. If the atmospheric pressure is 1013 hPa, what is it in mmHg?
A.
760 mmHg
B.
800 mmHg
C.
850 mmHg
D.
900 mmHg
Show solution
Solution
The atmospheric pressure of 1013 hPa is equivalent to 760 mmHg.
Correct Answer:
A
— 760 mmHg
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