INSIGHTS STATIC QUIZ 2020 - 21
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Question 1 of 5
1. Question
Consider the following statements.
- About 98 per cent of the total crust of the earth is composed of titanium, hydrogen, phosphorous, manganese and sulphur.
- All three rock types (igneous, sedimentary, and metamorphic) can be found in Earth’s crust.
- The oldest rocks on our planet are part of the continental crust.
Which of the above statements is/are correct?
Correct
Solution: c)
The most abundant elements in the Earth’s crust include (listed here by weight percent) oxygen, silicon, aluminum, iron, and calcium.
All three rock types (igneous, sedimentary, and metamorphic) can be found in Earth’s crust.
The oldest rocks on our planet are part of the continental crust and date back approximately 4 billion years in age. Ocean crust is constantly recycled through our planet’s system of plate tectonics and only dates back to approximately 200 million years ago.
Incorrect
Solution: c)
The most abundant elements in the Earth’s crust include (listed here by weight percent) oxygen, silicon, aluminum, iron, and calcium.
All three rock types (igneous, sedimentary, and metamorphic) can be found in Earth’s crust.
The oldest rocks on our planet are part of the continental crust and date back approximately 4 billion years in age. Ocean crust is constantly recycled through our planet’s system of plate tectonics and only dates back to approximately 200 million years ago.
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Question 2 of 5
2. Question
Consider the following statements regarding Karst topography.
- It is commonly associated with carbonate rocks.
- Such topography occurs only in tropical and temperate environments.
- Nearly a quarter of the world’s population depends upon water supplied from karst areas.
Which of the above statements is/are correct?
Correct
Solution: b)
The term karst describes a distinctive topography that indicates dissolution (also called chemical solution) of underlying soluble rocks by surface water or ground water. Although commonly associated with carbonate rocks (limestone and dolomite) other highly soluble rocks such as evaporates (gypsum and rock salt) can be sculpted into karst terrain.
Understanding caves and karst is important because ten percent of the Earth’s surface is occupied by karst landscape and as much as a quarter of the world’s population depends upon water supplied from karst areas. Though most abundant in humid regions where carbonate rock is present, karst terrain occurs in temperate, tropical, alpine and polar environments.
Incorrect
Solution: b)
The term karst describes a distinctive topography that indicates dissolution (also called chemical solution) of underlying soluble rocks by surface water or ground water. Although commonly associated with carbonate rocks (limestone and dolomite) other highly soluble rocks such as evaporates (gypsum and rock salt) can be sculpted into karst terrain.
Understanding caves and karst is important because ten percent of the Earth’s surface is occupied by karst landscape and as much as a quarter of the world’s population depends upon water supplied from karst areas. Though most abundant in humid regions where carbonate rock is present, karst terrain occurs in temperate, tropical, alpine and polar environments.
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Question 3 of 5
3. Question
Consider the following statements.
- The location of the thermal equator is not identical to that of the geographic Equator.
- The location of thermal equator is most affected by the level of insolation received in both hemispheres.
Which of the above statements is/are correct?
Correct
Solution: a)
The location of the thermal equator is not identical to that of the geographic Equator.
This is not due to the Level of insolation received in both hemispheres. They are virtually equal.
What creates the difference is the distribution of land and water that causes changes in the way heat is distributed and transported across the planets.
Land dominated areas will tend to have a large variation in temperature and a higher average temperature under the same conditions (as compared to a water dominated area).
Thus, the thermal equator lies a bit north of the geographical equator.
Incorrect
Solution: a)
The location of the thermal equator is not identical to that of the geographic Equator.
This is not due to the Level of insolation received in both hemispheres. They are virtually equal.
What creates the difference is the distribution of land and water that causes changes in the way heat is distributed and transported across the planets.
Land dominated areas will tend to have a large variation in temperature and a higher average temperature under the same conditions (as compared to a water dominated area).
Thus, the thermal equator lies a bit north of the geographical equator.
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Question 4 of 5
4. Question
Consider the following statements.
- The mid-day sun never shines overhead on any latitude beyond the Tropic of Cancer and the Tropic of Capricorn.
- The areas bounded by the Tropic of Cancer and the Arctic Circle in the Northern Hemisphere, and the Tropic of Capricorn and the Antarctic Circle in the Southern Hemisphere, have moderate temperatures.
Which of the above statements is/are incorrect?
Correct
Solution: d)
The mid-day sun never shines overhead on any latitude beyond the Tropic of Cancer and the Tropic of Capricorn. The angle of the sun’s rays goes on decreasing towards the poles. As such, the areas bounded by the Tropic of Cancer and the Arctic Circle in the Northern Hemisphere, and the Tropic of Capricorn and the Antarctic Circle in the Southern Hemisphere, have moderate temperatures. These are, therefore, called Temperate Zones.
Incorrect
Solution: d)
The mid-day sun never shines overhead on any latitude beyond the Tropic of Cancer and the Tropic of Capricorn. The angle of the sun’s rays goes on decreasing towards the poles. As such, the areas bounded by the Tropic of Cancer and the Arctic Circle in the Northern Hemisphere, and the Tropic of Capricorn and the Antarctic Circle in the Southern Hemisphere, have moderate temperatures. These are, therefore, called Temperate Zones.
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Question 5 of 5
5. Question
Consider the following statements.
- More fresh water can be found in the atmosphere than in the rivers on earth.
- Rivers on earth contain less fresh water than Inland seas and salt lakes.
- Ice-caps contain less fresh water than the fresh water available in the groundwater.
Which of the above statements is/are correct?
Correct
Solution: a)
Incorrect
Solution: a)
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