Objective: Learn how ocean currents move heat around the Earth Agenda: Textbook pages 519-524 answer questions 1-6 Ocean Notes continued Ocean Current.

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Presentation transcript:

Objective: Learn how ocean currents move heat around the Earth Agenda: Textbook pages answer questions 1-6 Ocean Notes continued Ocean Current Worksheet Review for Test Homework: All work is due tomorrow for 2 nd MP Test Tomorrow… STUDY!

Salinity The amount of salt per unit water is known as salinity. The average salinity of seawater is _____ ppt. Therefore, for every 1,000 ml water, there are ___ grams of dissolved salts. The most abundant salt in seawater is ________, but there are many other salts present in the form of ions. Near the equator salinity is __________ than average due to ___________________. Near the poles salinity is __________ than average due to _______________. In the Mediterranean the salinity is __________than average due to __________. NaC l lower greater precipitation lower melting sea ice higher evaporation

The salinity here would likely be: A.35 ppt B.34 ppt C.36 ppt

What makes the ocean water in the picture to the left different colors? Why would a shrimp that appears bright red at the surface appear black at greater depths, and why might this be beneficial? differences in depth Longer (red) wavelengths are absorbed before reaching deep water. Shrimp can hide and not become a meal.

Label the three ocean layers in the diagram below. Surface layer Thermocline Bottom layer

Listed below are some of the major surface currents. The force which generates these currents is ____________. wind

Transport ~ 20% of latitudinal heat Equator to poles Transport nutrients and organisms Influences weather and climate Influences commerce

Chapter Review 1.What is the average salinity of seawater? 2.What is the deepest area of the seafloor? 3.What is the largest ocean? 4.Why is the ocean “blue”? 5.What is the force responsible for surface currents? 6.What causes density currents? 7.Name the ocean that borders Virginia. 35 ppt trench Pacific shorter wavelengths not absorbed wind differences in temperature and salinity Atlantic