World Geography Test 2

Answer – a

Lake Van in Turkey (330 o/oo),
Dead Sea (238 o/oo),
Great Salt Lake (220 o/oo)

Red Sea (41o/oo)

Answer – c

• Differences in water density affect verticalmobility of ocean currents. Water with highsalinity is denser than water with low salinityand in the same way cold water is denser thanwarm water. Denser water tends to sink, whilerelatively lighter water tends to rise. Cold-waterocean currents occur when the cold water atthe poles sinks and slowly moves towards the Warm-water currents travel out fromthe equator along the surface, flowing towardsthe poles to replace the sinking cold water.
• Cold currentsare usually found on the west coast of thecontinents in the low and middle latitudes(true in both hemispheres)

Answer – a

Answer – a

Answer – b

Answer – c

Refer to your own familiar map.

Also check the countries through which Tropic of Capricorn and Equator passes

Answer – a

• Llanos are treeless savannah and/or swampy grass in Colombia particularly

• Seratos are dry scrublands in Brazil

• Pampas are temperate grasslands

Notes

• When you are doing map, also refer to the adjoining geographical features and places besides those mentioned in this test.
• Always refer to your own atlas as it will always be more familiar than the digital ones we post.
• Be prepared for map questions on other regions in the following weeks

Answer – a

• The velocity of waves changes asthey travel through materials with different The denser the material, the higheris the velocity. Their direction also changes asthey reflect or refract when coming acrossmaterials with different densities.
• S-waves arrive at the surface with some time These are called secondary waves. An
  important fact about S-waves is that they can travel only through solid materials. This characteristic of the S-waves is quite important. It has helped scientists to understand the structure of the interior of the earth. Reflection causes waves to rebound whereas refraction makes waves move in different directions.
• The surfacewaves are the last to report on seismograph.These waves are more destructive. They causedisplacement of rocks, and hence, the collapseof structures occurs.

Answer – a

• According to Wegener, all the continents formed a single continental mass and mega ocean surrounded the same. The super continent was named PANGAEA, which meant all earth. The mega-ocean was called PANTHALASSA, meaning all water. He argued that, around 200 million years ago, the super continent, Pangaea, began to split. Pangaea first broke into two large continental masses as Laurasia and Gondwanaland forming the northern and southern components respectively. Subse-quently, Laurasia and Gondwanaland continued to break into various
  smaller continents that exist today.
• The belt of ancient rocks of 2,000 million years from Brazil coast matches with those from western Africa. The earliest marine deposits along the coastline of South America and Africa are of the Jurassic age. This suggests that the ocean did not exist prior to that time. Marine deposits got formed on the coasts of each only after their separation.

Answer – d

• Tillite,sedimentary rock that consists of consolidated masses of unweathered blocks (large, angular, detached rock bodies) and glacial till (unsorted and unstratified rock material deposited by glacial ice) in a rock flour (matrix or paste of unweathered rock).
• The matrix, which comprisesa large percentage of the rock, usually is dark gray to greenish black in colour and consists of angular quartz and feldspar grains and rock fragments in a very fine-grained paste.
• The widespread tillites in the geologic record provide evidence of former intense and widespread glaciation; Recent tillites (less than 11,700 years old) can be directly connected with glaciation, and Pleistocene tillites (11,700 to 2,600,000 years old) can be convincingly related to glaciation, but many earlier till-like bodies cannot.
• Only tillites formed from the till deposited by continental ice sheets have a good chance of being preserved in the geologic record.

Answer – a

• The occurrence of rich placer deposits of gold in the Ghana coast and the absolute absence
  of source rock in the region is an amazing fact.
• The gold bearing veins are in Brazil and it is obvious that the gold deposits of the Ghana are derived from the Brazil plateau when the two continents lay side by side.

Answer – a

• Salween river also passes through Thailand, which is part of ASEAN

Answer – c

Answer – c

The moisture carrying winds from the Bay of Bengal are blocked by Chin hills, Arakan Yoma and other extensions of Himalayas, thus leaving Shan plateau in Myanmar dry, just like Vidarbha and Telangana on Deccan plateau with respect to Western Ghats.

Answer – a

Luzon is Philippines’s largest island. Its capital Manila is situated on the same.

The largest island of Indonesia is Sumatra, while the capital city Jakarta is situated on Java island.

Answer – a

All the above questions fall under Distribution of natural resources across the world in Mains GS1.

Answer – d

GS 1 – Distribution of key natural resources across the world

• It is an important topic, which is often neglected in the preparation for prelims. One should prepare this alongside Prelims only
• There can be a direct question on how Nile river affects the economics of North – East Africa

Answer – a

Refer to your own map

GS 1 – Distribution of key natural resources across the world

• Congo river covers Central Western Africa, and therefore its economic influence needs thorough study

Answer – a

GS 1 – Distribution of key natural resources across the world

• Importance of the lakes and their origin around African Rift Valley

Answer – d

GS 1 – Distribution of key natural resources across the world

• Also note down other islands
• From Indian perspective, these islands are significant for their resources and strategically