INSIGHTS STATIC QUIZ 2020 - 21
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Question 1 of 5
1. Question
The thinnest layer of our planet is
Correct
Solution: b)
Earth has 4 layers:
- The outer crust that we live on
- The plastic-like mantle
- The liquid outer core
- The solid inner core
The crust is by far the thinnest of the layers of earth. The thickness varies depending on where you are on earth, with oceanic crust being 5-10 km and continental mountain ranges being up to 30-45 km thick. Thin oceanic crust is denser than the thicker continental crust.
Incorrect
Solution: b)
Earth has 4 layers:
- The outer crust that we live on
- The plastic-like mantle
- The liquid outer core
- The solid inner core
The crust is by far the thinnest of the layers of earth. The thickness varies depending on where you are on earth, with oceanic crust being 5-10 km and continental mountain ranges being up to 30-45 km thick. Thin oceanic crust is denser than the thicker continental crust.
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Question 2 of 5
2. Question
In the course of its evolution, the early atmosphere on earth largely contained
- Water vapour
- Nitrogen
- Carbon dioxide
- Methane
- Ammonia
- Very little of free oxygen
Select the correct answer code:
Correct
Solution: d)
During the cooling of the earth, gases and water vapour were released from the interior solid earth.
This started the evolution of the present atmosphere. The early atmosphere largely contained water vapour, nitrogen, carbon dioxide, methane, ammonia and very little of free oxygen.
Incorrect
Solution: d)
During the cooling of the earth, gases and water vapour were released from the interior solid earth.
This started the evolution of the present atmosphere. The early atmosphere largely contained water vapour, nitrogen, carbon dioxide, methane, ammonia and very little of free oxygen.
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Question 3 of 5
3. Question
- Consider the following statements.
- More fish come closer to the shore during the Low tide.
- High tides help in navigation as they raise the water level close to the shores.
Which of the above statements is/are incorrect?
Correct
Solution: a)
High tides help in navigation. They raise the water level close to the shores. This helps the ships to arrive at the harbour more easily. The high tides also help in fishing. Many more fish come closer to the shore during the high tide. This enables fishermen to get a plentiful catch. The rise and fall of water due to tides is being used to generate electricity in some places.
Incorrect
Solution: a)
High tides help in navigation. They raise the water level close to the shores. This helps the ships to arrive at the harbour more easily. The high tides also help in fishing. Many more fish come closer to the shore during the high tide. This enables fishermen to get a plentiful catch. The rise and fall of water due to tides is being used to generate electricity in some places.
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Question 4 of 5
4. Question
Consider the following statements regarding Indian plate.
- The Indian plate is tectonically separated from the Peninsular India plate.
- It forms a convergent plate boundary with the Himalayas.
- The plate extends to Pakistan and Myanmar as well.
Which of the above statements is/are correct?
Correct
Solution: c)
The Indian plate includes Peninsular India and the Australian continental portions. The subduction zone along the Himalayas forms the northern plate boundary in the form of continent— continent convergence. In the east, it extends through Rakinyoma Mountains of Myanmar towards the island arc along the Java Trench. The eastern margin is a spreading site lying to the east of Australia in the form of an oceanic ridge in SW Pacific. The Western margin follows Kirthar Mountain of Pakistan.
Incorrect
Solution: c)
The Indian plate includes Peninsular India and the Australian continental portions. The subduction zone along the Himalayas forms the northern plate boundary in the form of continent— continent convergence. In the east, it extends through Rakinyoma Mountains of Myanmar towards the island arc along the Java Trench. The eastern margin is a spreading site lying to the east of Australia in the form of an oceanic ridge in SW Pacific. The Western margin follows Kirthar Mountain of Pakistan.
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Question 5 of 5
5. Question
Consider the following statements.
- Braided channels occur in rivers with near flat slopes.
- V-shaped valleys are a feature of youthful stage of Himalayan rivers.
Which of the above statements is/are correct?
Correct
Solution: b)
Braided streams tend to occur in rivers with high sediment loads and/or coarse grain sizes, and in rivers with steeper slopes than typical rivers with straight or meandering channel patterns.
The Himalayas mountains are tectonic in origin, dissected by fast-flowing rivers which are in their youthful stage. Various landforms like gorges, V-shaped valleys, rapids, waterfalls, etc. are indicative of this stage.
Incorrect
Solution: b)
Braided streams tend to occur in rivers with high sediment loads and/or coarse grain sizes, and in rivers with steeper slopes than typical rivers with straight or meandering channel patterns.
The Himalayas mountains are tectonic in origin, dissected by fast-flowing rivers which are in their youthful stage. Various landforms like gorges, V-shaped valleys, rapids, waterfalls, etc. are indicative of this stage.
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