Quiz # 27



#1 Jet streams are usually found in the:

The boundary between the turbulent troposphere and the calm, cold stratosphere is called the tropopause. Jet streams travel in the tropopause.Jet streams are some of the strongest winds in the atmosphere. Their speeds usually range from 129 to 225 kilometers per hour (80 to 140 miles per hour), but they can reach more than 443 kilometers per hour (275 miles per hour). They are faster in winter when the temperature differences between tropical, temperate, and polar air currents are greater.

#2 Which of the following hills are found where the Eastern Ghats and the Western Ghats meet?

The Nilgiri often referred to as the Nilgiri Hills, are a range of mountains with at least 24 peaks above 2,000 meters, in the westernmost part of Tamil Nadu at the junction of Karnataka and Kerala in Southern India.

#3 Which one of the following type of resource is iron ore?

A nonrenewable resource is a resource of economic value that cannot be readily replaced by natural means on a level equal to its consumption. Most fossil fuels, such as oil, natural gas and coal are considered nonrenewable resources in that their use is not sustainable because their formation takes billions of years. 

#4 Which one of the following is the main cause of land degradation in Punjab?

The major cause of land degradation in punjab is “flooding or Over irrigation”.Over exploitation of soil and water resources has led to the problem of soil degradation and declining water table in the large areas of Punjab.About 39% of the state’s soil is completely degraded while 50% of the soil is acutely low in nitrogen and 25% low in phosphorous content.

#5 In which one of the following states is terrace cultivation practised?

Rice and other crops are grown on the terraces. Hilly areas use this method of cultivation. The states that practice the cultivation are Uttarakhand, Himachal Pradesh and north-east states.Terrace cultivation, method of growing crops on sides of hills or mountains by planting on graduated terraces built into the slope. Though labour-intensive, the method has been employed effectively to maximize arable land area in variable terrains and to reduce soil erosion and water loss.

September 19, 2019

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