INSIGHTS STATIC QUIZ 2020 - 21
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Question 1 of 5
1. Question
Consider the following statements regarding Mangroves.
- Mangroves are very specialised forest ecosystems of tropical and subtropical regions bordering certain sea coasts.
- They stabilise the shoreline and act as bulwark against encroachments by the sea.
- They do not grow in low-oxygen soil.
Which of the above statements is/are correct?
Correct
Solution: b)
Mangroves are a group of trees and shrubs, sustaining in the coastal regions of the planet. These trees grow in low-oxygen soil with slow-moving water.
These ecosystems of tropical and subtropical inter-tidal regions bordering the sheltered sea coasts and estuaries, they stabilize the shoreline and act as a bulwark against encroachments by the sea.
Incorrect
Solution: b)
Mangroves are a group of trees and shrubs, sustaining in the coastal regions of the planet. These trees grow in low-oxygen soil with slow-moving water.
These ecosystems of tropical and subtropical inter-tidal regions bordering the sheltered sea coasts and estuaries, they stabilize the shoreline and act as a bulwark against encroachments by the sea.
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Question 2 of 5
2. Question
Which of the following factor is responsible for the change in the regular direction of the ocean currents in the Indian Ocean?
Correct
Solution: c)
The currents in the northern portion of the Indian Ocean change their direction from season to season in response to the seasonal rhythm of the monsoons. The effect of winds is comparatively more pronounced in the Indian Ocean.
Incorrect
Solution: c)
The currents in the northern portion of the Indian Ocean change their direction from season to season in response to the seasonal rhythm of the monsoons. The effect of winds is comparatively more pronounced in the Indian Ocean.
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Question 3 of 5
3. Question
Consider the following statements regarding Roaring Forties.
- They blow uninterrupted in the northern and southern hemispheres.
- In Southern hemisphere they blow from west-to-east due to the combination of air being displaced from the Equator towards the South Pole and the Earth’s rotation.
- They blow with great strength and constancy.
Which of the above statements is/are correct?
Correct
Solution: c)
The Roaring Forties are strong westerly winds found in the Southern Hemisphere, generally between the latitudes of 40°S and 50°S. The strong west-to-east air currents are caused by the combination of air being displaced from the Equator towards the South Pole, the Earth’s rotation, and the scarcity of landmasses to serve as windbreaks at those latitudes.
The boundaries of the Roaring Forties are not consistent: The wind-stream shifts north or south depending on the season.
Similar but even stronger conditions that occur at more southerly latitudes are called the Furious Fifties and the Shrieking or Screaming Sixties.
Incorrect
Solution: c)
The Roaring Forties are strong westerly winds found in the Southern Hemisphere, generally between the latitudes of 40°S and 50°S. The strong west-to-east air currents are caused by the combination of air being displaced from the Equator towards the South Pole, the Earth’s rotation, and the scarcity of landmasses to serve as windbreaks at those latitudes.
The boundaries of the Roaring Forties are not consistent: The wind-stream shifts north or south depending on the season.
Similar but even stronger conditions that occur at more southerly latitudes are called the Furious Fifties and the Shrieking or Screaming Sixties.
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Question 4 of 5
4. Question
Consider the following statements.
- Tides are of great help in navigation and fishing.
- Tides cause heavy siltation in the harbours.
- Kandla Port and Kolkata port are tidal ports in India.
Which of the above statements is/are correct?
Correct
Solution: b)
Tides move water in and out and this helps in better fishing.
During high tide water rushes into harbours. High tides makes the sea water rush into the mouth of the river. This helps big ships to enter or exit harbour safely.
Tides take away the terrigenous material bought by the rivers at the river harbours and prevents siltation.
Kandla Port and Kolkata port are tidal ports.
Incorrect
Solution: b)
Tides move water in and out and this helps in better fishing.
During high tide water rushes into harbours. High tides makes the sea water rush into the mouth of the river. This helps big ships to enter or exit harbour safely.
Tides take away the terrigenous material bought by the rivers at the river harbours and prevents siltation.
Kandla Port and Kolkata port are tidal ports.
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Question 5 of 5
5. Question
Places in the mountains are usually cooler than places on the plains due to the presence of
Correct
Solution: a)
- Density of air reduces with altitude, and so it is its ability to transfer the heat that the earth receives from the Sun.
- The atmosphere is not directly heated by the Sun, but by the air that is in contact with the earth.
- So, thin air reduces the warming potential in the mountains. Temperatures decline with gain in altitude.
- For example, Agra and Darjeeling are located on the same latitude, but temperature of January in Agra is 16°C whereas it is only 4°C in Darjeeling.
Incorrect
Solution: a)
- Density of air reduces with altitude, and so it is its ability to transfer the heat that the earth receives from the Sun.
- The atmosphere is not directly heated by the Sun, but by the air that is in contact with the earth.
- So, thin air reduces the warming potential in the mountains. Temperatures decline with gain in altitude.
- For example, Agra and Darjeeling are located on the same latitude, but temperature of January in Agra is 16°C whereas it is only 4°C in Darjeeling.
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