INSIGHTS STATIC QUIZ 2020 - 21
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Question 1 of 5
1. Question
Most of the world’s deserts are located in the western margins of continents in the subtropics. This is because?
- The tropical easterly winds become dry by the time they reach the western margins of the continents.
- Presence of warm ocean currents along the western shores of continents.
Select the correct answer code:
Correct
Solution: a)
The prevailing winds in the tropics are tropical easterly winds. The tropical easterly winds become dry by the time they reach the western margins of the continents and so they bring no rainfall.
Thus, the region becomes devoid of moisture which causes dry conditions leading to formation of deserts.
The presence of cold ocean currents along the western shores of continents leads to the development of high pressure over the water surface. This high pressure leads to subsidence of air hinders cloud formation.
Incorrect
Solution: a)
The prevailing winds in the tropics are tropical easterly winds. The tropical easterly winds become dry by the time they reach the western margins of the continents and so they bring no rainfall.
Thus, the region becomes devoid of moisture which causes dry conditions leading to formation of deserts.
The presence of cold ocean currents along the western shores of continents leads to the development of high pressure over the water surface. This high pressure leads to subsidence of air hinders cloud formation.
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Question 2 of 5
2. Question
Which of the following factors affect the climate of a place?
- Relief of a place
- Altitude
- Distance from Sea
- Circulation of ocean currents
- Wind flow
Select the correct answer code:
Correct
Solution: d)
Climate is affected by a multitude of factors like relief of a place, its altitude, distance from Sea, circulation of ocean currents and wind flow etc.
Incorrect
Solution: d)
Climate is affected by a multitude of factors like relief of a place, its altitude, distance from Sea, circulation of ocean currents and wind flow etc.
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Question 3 of 5
3. Question
Conditions favourable for Delta Formation are
- No strong current running at right angle to the river mouth.
- Presence of Continental shelf.
- Presence of large lake in the way of the river.
- The coast should be sheltered preferably without tides.
Which of the above statements is/are correct?
Correct
Solution: c)
Conditions favourable for the formation of deltas
- Lateral erosion and vertical erosion in the upper course of the river to provide extensive sediments to be eventually deposited as deltas.
- The coast should be sheltered and preferably without tides.
- The sea should be shallow near the delta region or else the load will disappear in the deep water.
- There should not be the presence of large lakes in the river course to filter off the sediments.
- The currents should be weak and no strong current should run at right angles to the river mouth as it can wash the sediment away.
Incorrect
Solution: c)
Conditions favourable for the formation of deltas
- Lateral erosion and vertical erosion in the upper course of the river to provide extensive sediments to be eventually deposited as deltas.
- The coast should be sheltered and preferably without tides.
- The sea should be shallow near the delta region or else the load will disappear in the deep water.
- There should not be the presence of large lakes in the river course to filter off the sediments.
- The currents should be weak and no strong current should run at right angles to the river mouth as it can wash the sediment away.
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Question 4 of 5
4. Question
Consider the following statements regarding Dharwar System of rocks.
- It is the oldest system of rocks in India.
- It contains metamorphic sedimentary rocks.
- It hosts gold mines.
Which of the above statements is/are correct?
Correct
Solution: d)
Dharwar system is later than the Archean system. The Dharwar period of rock formation has been largely fixed from 2500 million years ago to 1800 million years ago. Dharwar Rock System is special because it is the first metamorphic sedimentary rocks in India.
They are named Dharwar system because they were first studied in Dharwar region of Karnataka. But they are also found in Aravallis, Tamil Nadu, Chotanagpur plateau, Meghalaya, Delhi, and the Himalayas region.
Incorrect
Solution: d)
Dharwar system is later than the Archean system. The Dharwar period of rock formation has been largely fixed from 2500 million years ago to 1800 million years ago. Dharwar Rock System is special because it is the first metamorphic sedimentary rocks in India.
They are named Dharwar system because they were first studied in Dharwar region of Karnataka. But they are also found in Aravallis, Tamil Nadu, Chotanagpur plateau, Meghalaya, Delhi, and the Himalayas region.
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Question 5 of 5
5. Question
With reference to Aurora or Northern lights, consider the following statements:
- Auroras are the glowing lights at high latitude.
- Auroras can be normally observed in stratosphere.
- Change in the atmospheric temperature cause Auroras.
Which of the above statement is/are correct?
Correct
Solution: b)
An aurora, sometimes referred to as polar lights, northern lights (aurora borealis) or southern lights (aurora australis), is a natural light display in the Earth’s sky, predominantly seen in the high latitude regions (around the Arctic and Antarctic).
Auroras are produced when the magnetosphere is sufficiently disturbed by the solar wind. It usually occurs in upper atmosphere (thermosphere/exosphere) due to Earth’s magnetic field.
Incorrect
Solution: b)
An aurora, sometimes referred to as polar lights, northern lights (aurora borealis) or southern lights (aurora australis), is a natural light display in the Earth’s sky, predominantly seen in the high latitude regions (around the Arctic and Antarctic).
Auroras are produced when the magnetosphere is sufficiently disturbed by the solar wind. It usually occurs in upper atmosphere (thermosphere/exosphere) due to Earth’s magnetic field.
