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Distribution Of Oceans- Social Studies Notes

Distribution Of Oceans- Social Studies Notes_40.1

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.

Strategy to Prepare For Social Studies in CTET 2020

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.

Complete Social Studies Notes For All Teaching Exams!

OCEANS ON THE EARTH

There are four oceans. In order of their size, they are: Pacific Ocean, Atlantic Ocean, Indian Ocean and Arctic Ocean.

Pacific 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.

Atlantic Ocean

  • 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.

Indian Ocean

  • 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.

Social Studies Quiz

South Indian Ocean

  • Warm currents: 1. South Equatorial 2. Mozambique 3. Madagascar 4. Agulhas.
  • Cool Currents: 1. Antarctic drift 2. West Australian currents.

Arctic Ocean

  • 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.

Ocean Currents

  • 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.

Hot Currents

  • The currents flowing from tropical zones of lower latitudes to higher temperate and sub polar zones are known as hot water currents.

Cold 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.

Social Studies Quiz For CTET Exam : Attempt Daily Quizzes

Pacific Ocean currents:

Sl.

Current

Nature

1. North Equatorial Current

Hot or Worm

2. South Equatorial Current Warm
3. Kuroshio Current Warm
4. East Australian Current Warm
5. North Pacific Drift Warm
6. Humboldt or Peruvian Current Cold
7. Alaska Current Warm
8. Kuril or Oyashio or Okhotsk Current Cold
9. Equatorial Counter Current Worm
10. California Current Cold
11. El Nino Current Warm
12. Antarctica Circumpolar Current Cold
13. Tsushima Current Warm
14. Antilles Current Warm
15. Brazilian Current Warm
16. Florida Current Warm
17. Labrador Current Cold
18. Gulf Stream Warm
19. Canary Current Cold
20. Norwegian Current Warm
21. Benguela Current Cold
22. Irminger Current Warm
23. Antarctica Circumpolar Current Cold
24. Falkland Current Cold

Indian Ocean currents:

Sl.

Current

Nature

1. North Equatorial Current Warm & Stable
2. N – E Monsoon Current Cold & Unstable
3. Mozambique Current Warm & Stable
4. Somali Current Warm
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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