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Water, Air, Sails

Water, Air, Sails. Hydrology Cycle Air Currents. Objectives: Ocean Currents. Be able to describe the factors influencing ocean current formation Explain the importance of ocean currents Know the major currents affecting the western Atlantic Ocean (Eastern USA)

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Water, Air, Sails

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  1. Water, Air, Sails Hydrology Cycle Air Currents

  2. Objectives: Ocean Currents • Be able to describe the factors influencing ocean current formation • Explain the importance of ocean currents • Know the major currents affecting the western Atlantic Ocean (Eastern USA) • Be able to describe the Water Cycle • Be able to describe how sails work

  3. Earth: The Water Planet

  4. Ocean Currents • Movement of water due to wind, temperature, or density • May move clockwise or counterclockwise • Commercially important for shipping • Globally important as an influence of weather and ocean nutrient cycling

  5. Major Ocean Currents

  6. Current Data

  7. Ocean Currents

  8. Gulf Stream Influence

  9. Water Cycle The Hydrologic Cycle (also called the Water Cycle) is the process that moves water around the earth. The Water Cycle can change the form of water from liquid to water vapor to ice, and even clean it along the way, but it can't make more water. The water you drink today may have been lapped up by dinosaurs millions of years ago!

  10. Water Cycle The Water Cycle is powered by the sun which evaporates water from oceans, rivers, lakes, and even from trees. As the water vapor rises, it cools, condensing into clouds. Winds blow some of the clouds over land. The water falls to earth as precipitation. Runoff flows on the earth's surface into streams, rivers, or ponds. Water that sinks into the soil flows through underground reservoirs, or aquifers, as groundwater. Water passes through many different aquatic habitats before gravity pulls it to earth's lowest point, the ocean. So where is most water found?

  11. Water Cycle: Global Scale

  12. Water Vapor: Summer 95 Winter 95

  13. Global Temperatures

  14. Early Colonists Navigated Bay Using Square Sail Vessels

  15. Square Sails Catch Wind: Push Ships

  16. Wind Blows Over Triangular Sails: Pull Ship

  17. Log CanoeBugeye Skipjack

  18. Many Styles

  19. References • http://twister.sfsu.edu/courses/geol103/2/labs/currents/currents.home.html • http://www.uwsp.edu/acaddept/geog/faculty/ritter/geog101/lecture_atmospheric_circulation.html

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