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Question 1 of 5
1. Question
Consider the following statements regarding ocean temperature distribution.
- Thermocline layer is characterised by rapid decrease in temperature with increasing depth.
- In the Arctic and Antarctic circles, only one layer of cold water exists, which extends from surface to deep ocean floor.
- The oceans in the southern hemisphere record relatively higher temperature than in the northern hemisphere.
Which of the above statements is/are correct?
Correct
Solution: c)
The thermocline layer lies below the first layer and is characterised by rapid decrease in temperature with increasing depth.
In the Arctic and Antarctic circles, the surface water temperatures are close to 0° C and so the temperature change with the depth is very slight. Here, only one layer of cold water exists, which extends from surface to deep ocean floor.
The oceans in the northern hemisphere record relatively higher temperature than in the southern hemisphere. The highest temperature is not recorded at the equator but slightly towards north of it.
Incorrect
Solution: c)
The thermocline layer lies below the first layer and is characterised by rapid decrease in temperature with increasing depth.
In the Arctic and Antarctic circles, the surface water temperatures are close to 0° C and so the temperature change with the depth is very slight. Here, only one layer of cold water exists, which extends from surface to deep ocean floor.
The oceans in the northern hemisphere record relatively higher temperature than in the southern hemisphere. The highest temperature is not recorded at the equator but slightly towards north of it.
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Question 2 of 5
2. Question
Which of the following explains why one side of a mountain usually has more precipitation than the other side?
Correct
Solution: d)
Mountains also cause air to rise. As the wind blows across a mountain range, air rises and cools and clouds can form on the windward side. This is why windward sides of mountain ranges tend to get heavy precipitation.
When the air sinks on the leeward side of the mountain range, it is usually much drier and warmer than it was to begin with.
Incorrect
Solution: d)
Mountains also cause air to rise. As the wind blows across a mountain range, air rises and cools and clouds can form on the windward side. This is why windward sides of mountain ranges tend to get heavy precipitation.
When the air sinks on the leeward side of the mountain range, it is usually much drier and warmer than it was to begin with.
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Question 3 of 5
3. Question
Consider the following statements regarding Tropical Thorn Forests.
- Tropical thorn forests occur in the areas which receive rainfall less than 50 cm.
- Important species found here are mahua, amla, semul and kusum.
- In these forests, plants remain leafless for most part of the year.
Which of the above statements is/are correct?
Correct
Solution: b)
Tropical thorn forests occur in the areas which receive rainfall less than 50 cm. These consist of a variety of grasses and shrubs. It includes semi-arid areas of south west Punjab, Haryana, Rajasthan, Gujarat, Madhya Pradesh and Uttar Pradesh. In these forests, plants remain leafless for most part of the year and give an expression of scrub vegetation.
Important species found are babool, ber, and wild date palm, khair, neem, khejri, palas, etc. Tussocky grass grows upto a height of 2 m as the under growth.
Mahua, amla, semul, kusum are the main species of Moist deciduous forests.
Incorrect
Solution: b)
Tropical thorn forests occur in the areas which receive rainfall less than 50 cm. These consist of a variety of grasses and shrubs. It includes semi-arid areas of south west Punjab, Haryana, Rajasthan, Gujarat, Madhya Pradesh and Uttar Pradesh. In these forests, plants remain leafless for most part of the year and give an expression of scrub vegetation.
Important species found are babool, ber, and wild date palm, khair, neem, khejri, palas, etc. Tussocky grass grows upto a height of 2 m as the under growth.
Mahua, amla, semul, kusum are the main species of Moist deciduous forests.
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Question 4 of 5
4. Question
Consider the following statements regarding Mountains.
- Block Mountains are created when large areas are broken and displaced vertically.
- The uplifted blocks are termed as graben and the lowered blocks are called horsts.
- The Aravalli range in India is one of the oldest block mountain systems in the world.
Which of the above statements is/are incorrect?
Correct
Solution: c)
There are three types of mountains- Fold Mountains, Block Mountains and the Volcanic Mountains. The Himalayan Mountains and the Alps are young fold mountains with rugged relief and high conical peaks. The Aravalli range in India is one of the oldest fold mountain systems in the world. The range has considerably worn down due to the processes of erosion. The Appalachians in North America and the Ural mountains in Russia have rounded features and low elevation. They are very old fold mountains.
Block Mountains are created when large areas are broken and displaced vertically. The uplifted blocks are termed as horsts and the lowered blocks are called graben. The Rhine valley and the Vosges Mountain in Europe are examples of such mountain systems.
Incorrect
Solution: c)
There are three types of mountains- Fold Mountains, Block Mountains and the Volcanic Mountains. The Himalayan Mountains and the Alps are young fold mountains with rugged relief and high conical peaks. The Aravalli range in India is one of the oldest fold mountain systems in the world. The range has considerably worn down due to the processes of erosion. The Appalachians in North America and the Ural mountains in Russia have rounded features and low elevation. They are very old fold mountains.
Block Mountains are created when large areas are broken and displaced vertically. The uplifted blocks are termed as horsts and the lowered blocks are called graben. The Rhine valley and the Vosges Mountain in Europe are examples of such mountain systems.
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Question 5 of 5
5. Question
Consider the following statements regarding Dew point.
- Dew point is the temperature at which the atmosphere is saturated with water vapour.
- The dew point gives an indication of the humidity.
- A higher dew point means there will be less moisture in the air.
Which of the above statements is/are correct?
Correct
Solution: c)
Dew point, the temperature at which the atmosphere is saturated with water vapour, when it is cooled without changing its pressure or vapour content. A given volume of air containing much water vapour has a higher dew point than the same volume of drier air; thus, the dew point gives an indication of the humidity. In meteorology the dew point is applied, for example, in predicting the height of the base of certain types of clouds. A higher dew point means there will be more moisture in the air.
Incorrect
Solution: c)
Dew point, the temperature at which the atmosphere is saturated with water vapour, when it is cooled without changing its pressure or vapour content. A given volume of air containing much water vapour has a higher dew point than the same volume of drier air; thus, the dew point gives an indication of the humidity. In meteorology the dew point is applied, for example, in predicting the height of the base of certain types of clouds. A higher dew point means there will be more moisture in the air.
