Question of the Day Question: If you heat up a liquid, like water in a fish tank, can it hold more oxygen or less? How do you know? Answer: ……… Turn In: - Solubility Worksheet -p. 198 CYU 2, 3, 4, 5 -Lab: Solubility Activities

Ocean Currents

Two Types of Currents Density Driven (deep water) Currents Density Driven (deep water) Currents Wind Driven (surface) Currents Wind Driven (surface) Currents

Density Driven Currents Move water vertically through the ocean Move water vertically through the ocean Density differences cause deep water currents Density differences cause deep water currents Dense water sinks at the poles Dense water sinks at the poles Less dense water rises Less dense water rises at the equator at the equator This process creates This process creates circulation throughout the oceans of the world

Pacific Ocean Atlantic Ocean Artic Ocean Indian Ocean

Surface Currents Winds are primary energy source for surface currents. Winds are primary energy source for surface currents. Winds blow across the ocean surface Winds blow across the ocean surface friction between the wind and the ocean surface drags the water along friction between the wind and the ocean surface drags the water along

Which way does the water flow? Rotation of the earth changes path of air and water (Coriolis Effect) Rotation of the earth changes path of air and water (Coriolis Effect) Water flows to the right (clockwise) in Northern Hemisphere Water flows to the right (clockwise) in Northern Hemisphere

Northern Pacific Surface Currents Equator North Equatorial Current Kuroshio Current California Current South Equatorial Current East Australian Current

The EAC is Real

Global Surface Currents

Surface Currents in the US San Francisco The Gulf Stream is warm and comes from the equator/ Gulf of Mexico The California Current is cold and comes from Alaska Washington, DC

What is a gyre? A roughly circular pattern of ocean surface currents A roughly circular pattern of ocean surface currents Caused by the Coriolis Effect Caused by the Coriolis Effect

North Pacific Gyre Equator

Why are gyres/ currents important? Warm currents move heat from the equator to middle and high latitudes Warm currents move heat from the equator to middle and high latitudes Gyres influence air temperature, weather and climate of every continent Gyres influence air temperature, weather and climate of every continent