Social Studies is an important section for CTET, MPTET, State TET, and other teaching exams as well. Social studies is the main subject in the CTET exam Paper II. In CTET Exam, the Social Studies section comprises a total 60 questions of 60 marks, in which 40 questions come from the content section i.e.History, Geography and Political Science and the rest 20 questions from Social Studies Pedagogy section.
At least 10-15 questions are asked from the Geography section in the CTET Social studies section. Here we are providing important Notes related to the Distribution Of Oceans.
OCEANS ON THE EARTH
There are four oceans. In order of their size, they are: Pacific Ocean, Atlantic Ocean, Indian Ocean and Arctic Ocean.
- The explorer Ferdinand Magellan; who circumnavigated the Earth, named the ocean ‘Pacific’ meaning calm or peaceful.
- The Pacific Ocean is the largest ocean of the world.
- It is the deepest ocean with an average depth of 4,280 m (14,040 feet).
- The Mariana Trench is the world’s deepest trench with a depth of 11,034 metres (36,201 feet).
- Most of the islands of this ocean are of volcanic or coral origin.
- The Atlantic Ocean is the second largest ocean in the world Average depth: 3,300 metres.
- Its name is derived from Atlas, a Titan (giant) in Greek mythology
- The Atlantic Ocean, body of salt water covering one fifth of the earth surface has the longest coastline.
- The Atlantic Ocean is the busiest ocean for trade and commerce since its shipping routes connect the two most industrialized regions, namely Western Europe and N.E. United States of America.
- The Atlantic Ocean was formed millions of years ago when a rift opened up in the Gondwanaland and the continents of South America and Africa separated. The separation continues even today and the Atlantic Ocean is still widening.
- The continental islands of Newfoundland and British Isles are the major ones.
- Volcanic islands are fewer and they include those of Cuba, Jamaica and Puerto Rico Iceland is the largest island of volcanic origin.
- The Indian Ocean is the only ocean named after a country. Its average depth is 3,960 metres.
- The Indian Ocean is deeper than the Atlantic Ocean.
- It contains numerous continental islands, Madagascar and Sri Lanka are being the largest ones.
- Some of the islands of volcanic origin are those of Mauritius, Andamanand Nicobar, Seychelles, Maldives and Lakshadweep are of coral origin.
South Indian Ocean
- Warm currents: 1. South Equatorial 2. Mozambique 3. Madagascar 4. Agulhas.
- Cool Currents: 1. Antarctic drift 2. West Australian currents.
- The Arctic Ocean is the smallest of all the oceans.
- It lies within the Arctic Circle, hence the name Arctic Ocean.
- The North Pole lies in the middle of the Arctic Ocean.
- Most of the parts of Arctic Ocean remains frozen with thick ice for most of the days every year.
- It is the shallowest of all oceans, with an average depth of 987 metres.
- It has the least salinity of all the oceans. It has a salinity of 30 ppt.
- The flow of a large amount of water in a definite direction with a great intensity is known as Ocean Current.
- Ocean Currents are of two types – Hot and Cold.
- The currents flowing from tropical zones of lower latitudes to higher temperate and sub polar zones are known as hot water currents.
- The currents flowing from higher latitudes to lower latitudes are known as cold water currents.
- The only exception to the conduction of ocean currents is found in the Indian Ocean. The flow of currents changes here with a change in the direction of the Monsoon Winds. The hot currents flow towards cooler oceans and the cold currents flow towards the warmer oceans.
Pacific Ocean currents:
|1.||North Equatorial Current||
Hot or Worm
|2.||South Equatorial Current||Warm|
|4.||East Australian Current||Warm|
|5.||North Pacific Drift||Warm|
|6.||Humboldt or Peruvian Current||Cold|
|8.||Kuril or Oyashio or Okhotsk Current||Cold|
|9.||Equatorial Counter Current||Worm|
|11.||El Nino Current||Warm|
|12.||Antarctica Circumpolar Current||Cold|
|23.||Antarctica Circumpolar Current||Cold|
Indian Ocean currents:
|1.||North Equatorial Current||Warm & Stable|
|2.||N – E Monsoon Current||Cold & Unstable|
|3.||Mozambique Current||Warm & Stable|
|5.||Agulhas Current||Warm & Stable|
|6.||Western Astralian Current||Cold & Stable|
|7.||S – W Monsoon Current||Warm & Unstable|
|8.||South Indian Ocean Current||Cold|
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