Insights Static Quiz -421, 2019
Geography
INSIGHTS STATIC QUIZ 2019
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Question 1 of 5
1. Question
Consider the following statements regarding Continental Shelf.
- It is the shallowest part of the ocean.
- The width of the continental shelves vary from one ocean to another.
- Fossil fuels are present in Deep Sea Plain and not in Continental Shelf.
Which of the above statements is/are correct?
Correct
Solution: a)
The continental shelf is the extended margin of each continent occupied by relatively shallow seas and gulfs. It is the shallowest part of the ocean showing an average gradient of 1° or even less.
The width of the continental shelves vary from one ocean to another. The average width of continental shelves is about 80 km.
The continental shelves are covered with variable thicknesses of sediments brought down by rivers, glaciers, wind, from the land and distributed by waves and currents.
Massive sedimentary deposits received over a long time by the continental shelves, become the source of fossil fuels.
Incorrect
Solution: a)
The continental shelf is the extended margin of each continent occupied by relatively shallow seas and gulfs. It is the shallowest part of the ocean showing an average gradient of 1° or even less.
The width of the continental shelves vary from one ocean to another. The average width of continental shelves is about 80 km.
The continental shelves are covered with variable thicknesses of sediments brought down by rivers, glaciers, wind, from the land and distributed by waves and currents.
Massive sedimentary deposits received over a long time by the continental shelves, become the source of fossil fuels.
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Question 2 of 5
2. Question
Which of the following is/are the effects of temperature inversion?
- Good air quality
- Cloud formations
3. Thunderstorm Prevention
- Trapping of smog
Select the correct code:
Correct
Solution: a)
Temperature inversion is a phenomenon where a layer of warm air is formed on top of a layer of cold air, unlike in normal atmospheric conditions.
One of the most noticeable effects of a temperature inversion is on air quality. During the winter, temperature inversions are stronger and more common. This is generally when air quality suffers most as a result of temperature inversions. The warm air on top of the cool air acts as a lid, trapping pollution such as car emissions and smoke from fireplaces close to the ground. This results in hazy skies and poor air quality.
Temperature inversions are also responsible for certain cloud formations. When clouds form just below the inversion in the sky, they spread out and have a very flat smooth appearance. These clouds are often seen over cool ocean waters where temperature inversions are common.
Temperature inversions can keep thunderstorms from forming. Most thunderstorms happen during hot and humid weather at the surface, but they are unable to strengthen if the tops of the storms are unable to rise and retain their heat energy. When the typical temperatures are applied to the atmosphere with cooler temperatures at higher altitudes, it actually forms an unstable air layer that is ideal for the formation of thunderstorms.
Incorrect
Solution: a)
Temperature inversion is a phenomenon where a layer of warm air is formed on top of a layer of cold air, unlike in normal atmospheric conditions.
One of the most noticeable effects of a temperature inversion is on air quality. During the winter, temperature inversions are stronger and more common. This is generally when air quality suffers most as a result of temperature inversions. The warm air on top of the cool air acts as a lid, trapping pollution such as car emissions and smoke from fireplaces close to the ground. This results in hazy skies and poor air quality.
Temperature inversions are also responsible for certain cloud formations. When clouds form just below the inversion in the sky, they spread out and have a very flat smooth appearance. These clouds are often seen over cool ocean waters where temperature inversions are common.
Temperature inversions can keep thunderstorms from forming. Most thunderstorms happen during hot and humid weather at the surface, but they are unable to strengthen if the tops of the storms are unable to rise and retain their heat energy. When the typical temperatures are applied to the atmosphere with cooler temperatures at higher altitudes, it actually forms an unstable air layer that is ideal for the formation of thunderstorms.
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Question 3 of 5
3. Question
Temperature inversion is usually observed during winter nights. What would be the effects of it?
- Formation of fog and frost
- Brings atmospheric stability to certain extent.
- It may damage the standing crop
Select the correct answer code:
Correct
Solution: d)
Incorrect
Solution: d)
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Question 4 of 5
4. Question
Westerlies in southern hemisphere are stronger and persistent than in northern hemisphere. Why?
- Southern hemisphere has less landmass as compared to northern hemisphere.
- Coriolis force is higher in southern hemisphere as compared to northern hemisphere.
Which of the above statements is/are correct?
Correct
Solution: a)
Land mass influence/obstructs the flow of winds. Northern hemisphere has larger landmass than southern hemisphere.
Coriolis force remains constant in both the hemisphere.
Incorrect
Solution: a)
Land mass influence/obstructs the flow of winds. Northern hemisphere has larger landmass than southern hemisphere.
Coriolis force remains constant in both the hemisphere.
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Question 5 of 5
5. Question
Which of the following factors can cause tsunamis in the ocean?
- Underwater landslide
- Volcanic eruption
- A large meteorite strike
- Undersea earthquakes
Select the correct code:
Correct
Solution: d)
A tsunami is a large ocean wave that is caused by sudden motion on the ocean floor. This sudden motion could be an earthquake, a powerful volcanic eruption, or an underwater landslide. The impact of a large meteorite could also cause a tsunami. Tsunamis travel across the open ocean at great speeds and build into large deadly waves in the shallow water of a shoreline.
Incorrect
Solution: d)
A tsunami is a large ocean wave that is caused by sudden motion on the ocean floor. This sudden motion could be an earthquake, a powerful volcanic eruption, or an underwater landslide. The impact of a large meteorite could also cause a tsunami. Tsunamis travel across the open ocean at great speeds and build into large deadly waves in the shallow water of a shoreline.
