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Objective Ocean currents are cause by unequal heating and differences in salinity. The currents distribute heat around the planet.
Surface Currents Surface currents: Are usually caused by wind patterns & have a depth of several hundred meters(1000 feet). They can travel as fast as 100 Km per day.
Some surface currents are cold. Some surface currents are warm. Temperature of the water depends on where the currents originate.
Deep Currents In streams called currents. These streams or rivers flow deep in the ocean and can be thousands of miles long.
Density Currents Caused by differences in temperature and salinity of ocean water. Cold – Salty water goes down. Warm – Not so salty water goes up.
Major ocean currents affect the US The California Current: Brings very cold and salty water down from Alaska.
The Gulf Stream (Florida) Current. Very warm water flows away from the equator at about 5 mile per hour.
Gibraltar Current: Forms where the Mediterranean Sea meets the Atlantic Ocean at the Straight of Gibraltar. This salty water is more dense so it is heavier and sinks.
Gyres Continents deflect ocean currents to the north and south so that closed circular systems, called gyres develop.
Upwelling The upward motion of ocean water. Upwelling waters originate from the bottom of the ocean and thus are cold.
Earth’s Waters Chapter 4.4 Pages
Chapter 16 The Dynamic Ocean.
Oceanic Circulation Current = a moving mass of water.
Ocean Currents and Climate
Grade Eight Science Chapter Two. An ocean current is a large mass of moving water in the ocean. A current moves in one, unchanging direction. There are.
Surface Currents and Deep Currents
Chapter 7-2 Ocean Currents and Climate. What are currents and how do they affect us? Surface Currents: Are rivers of water moving through the ocean. –
Chapter 13 Oceans. Chapter: Oceans Table of Contents Section 3: WavesWaves Section 1: Ocean Water Section 2: Ocean Currents and ClimateOcean Currents.
Ocean Currents “Rivers in the Ocean”. Currents Current – a large stream of moving water that flows through the ocean. Capable of moving large amounts.
Unit 2.4: Currents and Tides. Vocabulary: 1.Current: a large stream of moving water that flows through oceans Unlike waves, currents carry water from.
Starter: What influences ocean currents? 10/23/ Convection and Ocean Currents 10/23/14 Practice : Glue notes here Application: Glue activity here.
Ocean Circulation Winds and Currents. The __________________ and the ___________________ interact The ocean and atmosphere transport heat from the ______________________________.
Composition and Movement of Ocean Water. Salinity Seawater is a solution containing a variety of salts dissolved in water Expressed in grams of salt per.
Chapter 21 Section 1 Review Page 524
Ocean Currents Text Book Page #
Section 1: Ocean Currents
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