Desertification could be a significant consequence of climate change. Given this scenario, how much do you know about deserts of the world and the process of desertification? Here is the desert quiz explanation.
If you have not seen the quiz you can find it here:
- What are Deserts?
a)Areas receiving very low precipitation
Ans. A. Deserts are areas that remain generally dry through most of the year. The dryness is attributed to low precipitation, that can be less than 250mm (10 in) annually. Lack of vegetation and the corresponding lack of evapotranspiration are characteristic features of deserts.
- How big is the Sahara Desert?
c)Larger by a little less than 3 times the size of India.
Ans. C. The Sahara Desert is roughly 2.86 times the size of India, with a total area of 9,4000,000 sq km, as compared to India’s area of 3,287,263 sq km.
- What is Changra?
c)A goat breed in Ladakh
Ans. C. The Pashmina goat native to Ladakh is locally known as Changra, as the name given by the Changpa community of Changthang region, who raise the goat breed.
- Who coined desertification?
a) Andre Aubreville
Ans. A. The term desertification was coined by the French botanist, Andre´ Aubreville in 1949 in a description of the transformation of productive agricultural land in northern Africa to desertlike, uncultivable fallow land.
- Which continent has the maximum proportion of area under desert?
Ans. C. Antarctica is sometimes referred to as the Antarctic Desert, where the cold leads to a lack of liquid surface water that is present throughout the continent covering a total area of 14,000,000 sq km.
- Who are the Rabari?
b)A desert community in Kutch
Ans. B. Rabari is the collective name for disparate communities of nomadic herders dispersed throughout the territories of Gujarat and Rajasthan. According to geographical categories the rabaris are divided into four broad groups – the Rabaris of Kutch, Sourashtra, northern Gujarat, and Rajasthan.
- Do you know the name of the world’s biggest oasis?
c)Al-Hasa (Saudi Arabia)
Ans. C. Al-Hasa oasis, located in Saudi Arabia about 65 km west of the Persian Gulf is the largest oasis in the world. The oasis covers about 30,000 acres of area (12,000 ha) and has more than three million trees. Many varieties of dates are grown in the oasis, that is irrigated by more than 60 artesian springs.
- What is the use of magic stones?
- c)Stopping surface run-off during heavy rainstorms
Ans. C. Stone lines or ‘magic stones’ evolved from a project initiated by Oxfam in 1979 that involves the collection and arrangement of stones in villages that are laid such that surface run-off from rare heavy rainstorms is prevented by trapping water and soil. This allows water time to percolate into the soil instead of running off randomly. This serves to allow crop use, reduce erosion and increase crop yields.
- Which of these is the world’s driest desert?
Ans. B. The Atacama Desert is the driest non-polar desert in the world. It is placed on a plateau in South America spanning a 1,000 km land strip by the Pacific coast westwards from the Andes mountain range. If the barren lower slopes of the Andes are included, the Atacama Desert in totality encompasses 128,000 sq km. Its dryness is attributed to its position between the two mountain ranges of the Andes and the Chilean Coast Range whose altitude prevents moisture advection from the surrounding oceans to occur in the region.
- Which of the following regions was recently in the news for a bout of heavy snowfall?
Ans. A. The Sahara desert witnessed intense snowfall in December 2016 when a winter storm enveloped the El-Bayad region of Algeria. This is the second instance of snowfall in the Sahara desert in recent history since 18th February, 1979.