Geography Quizzup | Day 45 | UPSC Prelims 2025 | Edukemy IAS #upscprelims #currentaffairs #geography

🌟Answers🌟

Q.1 Consider the following statements.

1. A solar eclipse occurs when the Sun is positioned in between the Moon and the Earth for a few minutes.
2. A partial or a total solar eclipse depends on how much portion of the Sun’s disc gets hidden by the Moon.
3. The safest way to view the solar eclipse is by projecting the Sun’s disc onto a white paper, by using a telescope.
Which of the above statements is/are correct?
a) 1, 2
b) 1, 3
c) 2, 3
d) 1, 2, 3

Solution: c)
Explanation:
A solar eclipse occurs when the Moon is positioned in between the Sun and the Earth for a few minutes.


Q.2 Consider the following statements.

1. Shallow earthquakes are generally less devastating compared to deeper earthquakes, because Shallow earthquakes carry less energy when they emerge on the surface.
2. The seismic waves of deeper earth quakes usually move slowly upwards to the surface.
3. The earthquake magnitude scale gives a measure of the energy released by the seismic waves.
Which of the above statement sis/are correct?
a) 1, 2
b) 3 only
c) 2, 3
d) 1, 2, 3

Solution: b)
Explanation:

Shallow earthquakes are generally more devastating because they carry greater energy when they emerge on the surface. Deeper earthquakes lose much of their energy by the time they come to the surface. The deeper quakes spread farther — the seismic waves move radially upwards to the surface — even as they lose energy while travelling greater distances, and hence cause less damage.

The earthquake magnitude scale gives a measure of the energy released, although the reading in itself is not of energy. Rather, it takes into account amplitude or ‘size’ of the seismic waves released, and variations in distance between various seismographs and the earthquake epicentre. Thus, it is a dimensionless number — with no physical units.


Q.3 Consider the following statements.

1. Western Himalayas is one of the most dangerous seismic zones in the world, because of the huge amount of energy stored along the fault lines due to the continuous interaction of different tectonic plates.
2. Seismic waves travel significantly faster than the speed of light.
3. With the present technological advancements, the predictions of future earthquakes can be easily made.
Which of the above statements is/are correct?
a) 1 only
b) 1, 2
c) 1, 3
d) 2, 3

Solution: a)
Explanation:

Western Himalayas continues to be the one of the most dangerous seismic zones in the world. Scientists say the Himalayan region, the 2500-km stretch from the Hindu Kush mountains to the end of Arunachal Pradesh, is due for a big earthquake, of a magnitude over 8 on Richter scale, anytime. This is because of the huge amount of energy stored along the fault lines due to the continuous interaction of different tectonic plates. The energy can be released only in the form of massive earthquakes.

Theoretically, it is possible to offer a lead time of a few seconds between the time of the origin of the earthquake and the time it reaches the Earth’s surface. Seismic waves travel significantly slower than the speed of light — between 5 and 13 km per second. So if the earthquake is detected as soon as it is triggered, information about it can be related a few seconds ahead of it reaching the ground.

Q.4 What will be the correct sequence of cities on the bank of River Ganga if someone moves from east to west?
a) Varanasi, Patna, Kanpur, Allahabad
b) Varanasi, Patna, Allahabad, Kanpur
c) Patna, Varanasi, Allahabad, Kanpur
d) Patna, Allahabad, Varanasi, Kanpur

Solution: c)

Q.5 Indus River Basin is extended upto
a) Ladakh, Jammu and Kashmir, Punjab, Haryana
b) Ladakh, Jammu and Kashmir, Himachal Pradesh, Punjab
c) Ladakh, Jammu and Kashmir, Himachal Pradesh, Punjab, Haryana
d) Ladakh, Jammu and Kashmir, Himachal Pradesh, Punjab, Haryana, Rajasthan

Solution: d)
Explanation:
In India, the Indus basin spreads over Jammu & Kashmir, Ladakh, Himachal Pradesh, Punjab and part of Rajasthan, Haryana, and Chandigarh.

QOD
Consider the following statements regarding Tornadoes.

1. Tornadoes are whirling, vertical air columns that form from thunderstorms, without stretching to the ground.
2. Changes in the wind’s speed and direction can lead to strong tornadoes.
Which of the above statements is/are correct?
a) 1 only
b) 2 only
c) Both 1 and 2
d) Neither 1 nor 2

Solution: b)
Explanation:

Tornadoes are whirling, vertical air columns that form from thunderstorms and stretch to the ground. They travel with ferocious speed and lay waste to everything in their path.

When winds vary in speed or direction at different altitudes–a condition known as wind shear–the updraft will start to spin.

These changes in winds produce the spin necessary for a tornado. For especially strong tornadoes, changes are needed in both the wind’s speed and direction.

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[Sanu-dn]

Last question answer is = both 1&2