jet streams and ocean currents 0.0 / 5 ? Geographyjet streams and ocean currentsGCSEEdexcel Created by: Kenneth PowleyCreated on: 17-01-22 09:35 In the upper atmosphere, wind blows around the Earth in what direction? (1) Westerly direction 1 of 18 Within these winds are bands of extremely fast moving air. What are these known as? (1) Jet streams 2 of 18 Describe the width and height of jet streams. (2) Can be hundreds of km wide but only 1-2000m high 3 of 18 At what altitude are jet streams found? (1 Attitudes of about 10,000 km 4 of 18 Where are jet streams mostly found? (1) At the boundaries of the main circulation cells 5 of 18 What are the two jet streams called? (2) Polar front jet stream and Sub-tropical jet stream 6 of 18 When and where is the Polar front jet stream formed? (Include the latitudes) (3 When polar air meets warm tropical air high above the Atlantic Ocean, usually between latitudes 40ᵒN and 60ᵒN, and 40ᵒS and 60ᵒS 7 of 18 What does the Polar front jet stream mark? (1 The division between the Polar and Ferrel Cells 8 of 18 What direction is the subtropical jet stream generally in? (1) Westerly direction 9 of 18 At what latitudes can the subtropical jet stream be found? (2 Approximately 25ᵒN and 35ᵒS 10 of 18 Ocean Currents What % of the total heat that is transferred from the tropics to the poles is transferred by the oceans? (1) 20% 11 of 18 What is a gyre? (1 Circular pattern of surface currents 12 of 18 When are gyres produced? (1 As masses of water move from one climate to another. 13 of 18 Why are the currents of all the oceans similar? (1) They are created by the surface winds generated by global atmospheric circulation 14 of 18 Where are the strongest ocean currents?(1 Western side of oceans 15 of 18 Give an example of one of the strongest ocean currents.(1 North Atlantic Drift 16 of 18 Where and when is the transfer of heat from low to high latitudes particularly noticeable. (2) Between latitude of 40ᵒ and 65ᵒ in winter, when warm winds blow onshore on the western sides of continents raising the temperature 17 of 18 Why do cold currents have less effect on land temperatures? Give an exception. (3 They are usually offshore winds. One exception is the Labrador current off the east coast of North America. 18 of 18
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