1. 30.Ocean Properties EQ: What are the different aquatic ecosystems? Why are they so important to life on Earth? LT: I can identify the three life zones and the three layers within the ocean. LTask: I will identify key properties of Earth’s oceans. I will research the Ocean’s Zones and Layers using my iPad. I will complete a “KeyQuest” to learn more about how organisms are adapted to life in the ocean.

2. Welcome! Warm Up 3/12/14 1. Explain why the absence of the Giant Kelp will lead to the disappearance of the Sea Otter 2. Explain why the absence the sea otter will lead to the disappearance of the Giant Kelp.

3. Table of Contents 1 Table of Contents 1 Title Assignment # Water Properties Webquest 8 Water Cycle Brainpop9 Water Cycle Vocabulary10 Water on Earth Notes11 River Basin Notes 12 River Basin Vocab13 River Basin Scavenger Hunt14 Estuaries Notes 15 Wetlands16 Diagram River Basin to Estuary17 Wetlands and Estuaries Vocab 18 Estuary Ecosystems 19 Ocean Food Webs20 Ocean Properties21

4. & other cool stuff about the oceans! about the oceans!

5. Salinity Salinity - the total amount of salt material dissolved in water Salinity - the total amount of salt material dissolved in water Comes from: Comes from: –Eroding Land –Reactions at sea floor –Volcanic Emissions

6. Desalination Desalination is the process of removing salt from water Desalination is the process of removing salt from water It’s typically done by boiling the water, and trapping and cooling the water vapor so that it condenses as fresh water It’s typically done by boiling the water, and trapping and cooling the water vapor so that it condenses as fresh water Expensive – it uses a lot of fossil fuels to heat the sea water Expensive – it uses a lot of fossil fuels to heat the sea water

7. Gases in the Ocean Gases in ocean similar to that of the atmosphere Gases in ocean similar to that of the atmosphere –CO 2, N 2, and O 2 Oxygen and Carbon Dioxide exchange Oxygen and Carbon Dioxide exchange –Photosynthesis = Make oxygen –Respiration = Make carbon dioxide

9. Temperature Changes Temperature changes in 2 directions: Temperature changes in 2 directions: –Latitude (North vs. South) – Surface waters near equator > surface waters at poles –Depth – Deeper waters = colder (less sun!) Thermocline – Layer of ocean water with a sudden change in temperature in relation to depth. Thermocline – Layer of ocean water with a sudden change in temperature in relation to depth.

11. Hydrothermal Vents Seawater moves into the ocean from cracks in Earth’s crust. Seawater moves into the ocean from cracks in Earth’s crust. Very high temperatures (sometimes 100°C!) Very high temperatures (sometimes 100°C!) Unique ocean life! Unique ocean life!

12. Upwelling The movement of cold water upward from the deep ocean The movement of cold water upward from the deep ocean This brings up tiny organisms (food), minerals, and nutrients This brings up tiny organisms (food), minerals, and nutrients Because of all this food, zones of upwelling are usually home to huge schools of fish Because of all this food, zones of upwelling are usually home to huge schools of fish

13. pH The measurement of how acidic or basic a solution is. The measurement of how acidic or basic a solution is. Acidic = Low pH Acidic = Low pH Neutral = pH of 7 Neutral = pH of 7 Basic = High pH Basic = High pH

14. Changing pH Increased atmosphere CO 2 = lowers the pH of ocean Increased atmosphere CO 2 = lowers the pH of ocean This is known as Ocean acidification This is known as Ocean acidification Animals dying! =  Animals dying! = 

15. Ocean Zones & Layers KeyQuest Use SAFARI, go to www.stoffregen.wikispaces.com Use SAFARI, go to www.stoffregen.wikispaces.com Click on 30.Ocean Zones & Layers.key Click on 30.Ocean Zones & Layers.key Use the Keynote to answer the questions on your KeyQuest Handout Use the Keynote to answer the questions on your KeyQuest Handout

16. Popplet: Create an Ocean Food Web You need 3 plankton, 3 nekton, and 3 benthos in your food web. You need 3 plankton, 3 nekton, and 3 benthos in your food web. You also need at least one TERRESTRIAL (a.k.a. land) organism that eats something in your Ocean food web. You also need at least one TERRESTRIAL (a.k.a. land) organism that eats something in your Ocean food web. Remember, this is due on FRIDAY! Remember, this is due on FRIDAY!