Currents IAN 1

1. Ocean water is always moving

2. current is a stream of water flowing like a river in the ocean.

3. ocean currents can carry warm water towards cold climates and can carry cold water towards warm climates

4. surface currents are caused by the wind.

5.  global winds travel thousands of miles and last for weeks; caused by uneven heating  between the equator and the north and south poles.

6.  The trade winds-blow from the east, they are close to the equator and were used by sailors traveling to trade with other countries.

7.  the westerlies- blow from the west, they are the strongest around 40 degree latitude. They carry the weather across the United States.   

 8. coriolis effect-the curving of winds and ocean currents caused by the Earth's rotation.

9. ocean currents flow in a clockwise direction in the Northern Hemisphere.  Currents flow in a counterclockwise direction in the Southern Hemisphere.

10.  coriolis effect causes the winds and the currents to curve.

11. Gulf Stream-100 km wide surface current in the Atlantic Ocean that carries warm water up from the equator.

12. drift bottle- bottle containing a message that is dropped into a current to track its movement.

13. Gyre-surface currents that are wind driven and and move in large circular patterns

14. North Atlantic Current is a gyre- surface current that takes warm water up to Northern Europe and gives it a warmer climate

15. continental deflection-when a current changes direction because it is flowing towards a continent