1. Warm Up11-4-14 1.Name the 5 different ocean basins on Earth 2.Explain how sonar works 3.What do we use sonar for? 4.How are submersibles different from submarines? Agenda -Notes Chp 19-2 -Play-Doh model -Sardine population questions Homework -Sardine population -Nov 7 - Progress report submitted

2. 1. Continental shelf 2. Continental slope 3. Submarine canyon 4. Continental rise 5. Deep ocean trench 6. Abyssal plain 7. Seamounts 8. Guyots 9. Mid-Ocean Ridge Chp 19-2 Ocean Floor Features

3. Continental margin continental rise

4. Ocean Floor Features Continental Margin: zone between the shoreline and the deep-ocean bottom 1. Continental Shelf: gently sloping surface extending from the shoreline 2. Continental Slope: Edge of the continental shelf, usually steep (boundary between continental crust and oceanic crust)

5. Ocean Floor Features 3. Submarine Canyons: steep valleys cut into the continental slope. – Created by turbidity currents

6. Ocean Floor Features Turbidity current: An underwater landslide. Caused by underwater earthquakes

7. Ocean Floor Features 4. Continental Rise: gently sloping surface at the base of the continental slope. 5. Deep Ocean Trench: creases in the ocean floor that form at subduction zones 6. Abyssal Plain: deep, flat areas (not much goes on here) 7. Seamounts: submerged volcanoes that form at hot spots

9. Ocean Floor Features 8. Guyot: seamount with a flat top 9. Mid-Ocean Ridge: cluster of underwater mountains that have developed on newly formed ocean crust – Where seafloor spreading occurs

10. Features of the Ocean Floor Using the Play-Doh, create the ocean floor and include the 6 features below. Show me your model when done. 1. Continental shelf 2. Continental slope 3. Submarine canyon 4. Continental rise 5. Deep ocean trench 6. Abyssal plain

11. Sardine Population

13. Sardine Population Questions Copy down the questions and answer 1. What natural events might affect the sardine population? 2. How did the fishing industry affected human population in Monterey? 3. What is a cause of the decline/collapse of the sardine industry? 4. What factors influence the growth of the sardine fishing industry? http://grist.org/news/sardines-have-nearly- disappeared-off-west-coast/