logging in or signing up Water. Oceans. Currents aq32 Download Post to : URL : Related Presentations : Let's Connect Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Copy embed code: Embed: Flash iPad Dynamic Copy Does not support media & animations Automatically changes to Flash or non-Flash embed WordPress Embed Customize Embed URL: Copy Thumbnail: Copy The presentation is successfully added In Your Favorites. Views: 644 Category: Education License: All Rights Reserved Like it (0) Dislike it (0) Added: January 18, 2012 This Presentation is Public Favorites: 0 Presentation Description No description available. Comments Posting comment... Premium member Presentation Transcript Water in the oceans: Water in the oceans Lecture No. 14.Water on Earth: Water on Earth Water is vital (жизненно необходимый) for life. All living organisms consist of 2/3 (two thirds) of water. Flora and fauna depend on (зависят от) water. Surface water: 97,5% salt water, 2,5% fresh water. Water covers 71% of the Earth’s surface. Water dissolves ( растворяет) substances (вещества) and transports them between land and sea.PowerPoint Presentation: Weather, temperature and climate depend on water. Water shapes ( придает форму) the planet.PowerPoint Presentation: An ocean is a continuous expanse of seawater. A sea is a landlocked water basin. Seawater consists of 97% of water and 3% of mineral salts, like sodium chloride (table salt).Oceans: Oceans There are 5 oceans: The Pacific ocean ( Тихий) The Atlantic ocean (Атлантический) The Indian ocean (Индийский) The Southern Ocean (Южный) The Arctic ocean (Северный Ледовитый)PowerPoint Presentation: The Southern ocean is beyond 50-55 degrees southern latitude.Ocean currents: Ocean currents An ocean current is a continuous, directed movement of ocean water generated by Waves (волны) W ind Coriolis effect T emperature Salinity (соленость, минерализация) Tides ( приливы и отливы)World currents: World currentsTypes of ocean currents: Types of ocean currents There are two types of ocean currents: Deep ocean currents ( глубинные течения) Surface currents (поверхностные течения) Constant ( постоянный) Seasonal ( сезонный) Ocean currents are measured in Sverdrup (Sv) 1Sv = 1,000,000 m 3 per second.Surface currents: Surface currents Made by winds: the Ekman spiral effect makes the water flow at the same angle as the dominant wind Develop spiralsEkman spiral effect. 1:Wind 2:force from above 3:Effective direction of the current 4: Coriolis effect: Ekman spiral effect. 1 :Wind 2 :force from above 3 :Effective direction of the current 4 : Coriolis effect 1 2 3 4Deep ocean currents: Deep ocean currents Made by density ( плотность) : Cold or salty water is more dense and sinks, and temperature, gravity ( сила тяжести) Studied by Argo, underwater robotsPowerPoint Presentation: Deep ocean currents make the conveyor belt. One circuit can take 1000 years to complete.Upwelling and downwelling: Upwelling and downwelling Coriolis force causes water to move to the right in the North and to the left in the South. Upwelling brings cold water with rich marine food to the surface. Downwelling causes floods.Examples: Examples Ocean currents determine the climate of the Earth . the most famous example is the Gulf Stream , which makes northwest Europe temperate . Another example is the California Current which makes the Hawaiian Islands , cooler than other places in the tropical latitudes. You do not have the permission to view this presentation. In order to view it, please contact the author of the presentation.