QUIZ – 2020: INSIGHTS STATIC QUIZ, 13 January 2020 – Geography

Solution: b)

• Dharwar system is later than the Archean system but older than the other systems. The Dharwar period of rock formation has been largely fixed from 2500 million years ago to 1800 million years ago.
• The rocks of the Dharwar system are mainly sedimentary in origin, and occur in narrow elongated synclines resting on the gneisses found in Bellary district, Mysore and the Aravalli’s of Rajputana.
• The Dharwar rocks are rich in iron ore, manganese, lead, zinc, gold, silver etc. The Champions series containing gold mines lie within this system. This Champion system is named after the Champion reef in the Kolar Gold Fields. The Kolar Gold Fields contain one of the deepest gold mines of world.

Solution: a)

Density of air reduces with altitude, and so it is its ability to transfer the heat that the earth receives from the Sun.

The atmosphere is not directly heated by the Sun, but by the air that is in contact with the earth.

So, thin air reduces the warming potential in the mountains. Temperatures decline with gain in altitude.

For example, Agra and Darjiling are located on the same latitude, but temperature of January in Agra is 16°C whereas it is only 4°C in Darjiling.

Solution: d)

A rift valley is a lowland region that forms where Earth’s tectonic plates move apart, or rift. Narmada flows in a rift valley flowing west between the Satpura and Vindhya ranges.

The other rivers which flow through rift valley include Damodar River in Chota Nagpur Plateau and Tapti. The Tapti River and Mahi River also flow through rift valleys, but between different ranges.

Solution: d)

The physiography or relief of India also affects the temperature, air pressure, direction and speed of wind and the amount and distribution of rainfall.

Solution: c)