PPT-Currents

Currents Ocean water contains streamlike movements of water called ocean currents Currents can travel extremely far In ancient times currents were largely responsible for any human travel across the oceans It is believed that currents carried the ancient Peruvians over 6000 km across the south pacific to Polynesia . ripcurrentsnoaagov httpwwwuslaorgripcurrents httpwwwweathergovnwr How can I identify a rip current Signs that a rip current is present are very subtle and dif64257 cult for the average beachgoer to identify Look for differences in the water color wat They exist as a way of getting water carried to the beach by breaking waves back out to sea and are usually confined to deeper channels between shallow sand bars The bigger the waves the stronger the rip Think of them as rivers of the sea Low energy Currents Currents Subject Review The following questions are based on information from the Tutorial on Currents ( http://oceanservice.noaa.gov/education/kits/cur - rent s /welcome.html ). 1. The _ Section 3: Currents, Waves, and Tides. Earth Science. Mr. Margetan. . Ocean Currents. Surface Currents – Movement of water on the surface, primarily caused by winds. Ocean Currents. Longshore. Currents – Currents which run parallel to the shoreline due to energy released from waves. Global winds. Ocean Currents . Local winds. Coriolis Effect. Because the Earth rotates, and consists of a mixture of land and sea, the . Coriolis Effect . exists. The . Coriolis Effect. is the movement of particles (such as air) to the right in the Northern Hemisphere. http. ://oceanexplorer.noaa.gov/edu/learning/player/lesson08.. html. . . I. . Ocean . currents = Stream like movements of water. A. Surface currents. = occur near or at the surface of the ocean. Can reach 100 m deep or deeper. 6. th. Grade Earth Science. Currents. A current is a large stream of water that flows through the ocean. . Two types of currents. Surface Currents Deep Currents. VIII. Discussion. Currents. :. A geostrophic balance . between . Florida Current transport and coastal sea . levels at 4-8 day periods . (Fig 2. ).. Depth-averaged currents were consistent between all locations (Fig 3), with along-shelf currents dominating.. The . shoreline. is . constantly . . changing. .. Waves. are the . #1 cause. !. Shoreline Currents. Longshore. . current. Rip current. Shoreline Currents. Longshore. current: flows parallel to shore. The water in the ocean moves in giant streams called currents.. Scientists place ocean currents into two major categories: surface currents and deep currents.. Surface . Currents. Ocean currents that occur at 328 feet deep or above. Weather Patterns. Weather pattern’s are described as prolonged temperature changes over a specific area for example seasons.. Weather patterns can also be described as a period for which natural disasters are prevalent ex. Hurricane season, tornado season, blizzards. Earth/Space. S.W.B.A.T.. Explain how winds and the . Coriolis. effect influence surface currents. Discuss the temperatures of coastal waters. Describe density currents and how they affect Earth. Surface Currents. Highways in the Sea. What forces are responsible for currents?. Wind. : transfers energy through friction on surface; causes currents and waves. Sea level. : steeper slope=greater pressure gradient=drives a larger, faster current. How do different currents form. What is upwelling. What do ocean currents transfer. Predict. T F. Ocean currents are always cold. C. ontinents affect the direction of currents. Currents only flow near the surface of the ocean.