*Refer to Chapter 11 in your Textbook. Learning Goals: 1. I can differentiate between the various...
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Transcript of *Refer to Chapter 11 in your Textbook. Learning Goals: 1. I can differentiate between the various...
![Page 1: *Refer to Chapter 11 in your Textbook. Learning Goals: 1. I can differentiate between the various types of ocean currents. 2. I can describe the effect.](https://reader035.fdocuments.us/reader035/viewer/2022062519/5697bfcf1a28abf838caa1d0/html5/thumbnails/1.jpg)
Lesson 4.3:Currents
*Refer to Chapter 11 in your Textbook
![Page 2: *Refer to Chapter 11 in your Textbook. Learning Goals: 1. I can differentiate between the various types of ocean currents. 2. I can describe the effect.](https://reader035.fdocuments.us/reader035/viewer/2022062519/5697bfcf1a28abf838caa1d0/html5/thumbnails/2.jpg)
Learning Goals:
1. I can differentiate between the various types of ocean currents.
2. I can describe the effect of coriolis on ocean currents.
![Page 3: *Refer to Chapter 11 in your Textbook. Learning Goals: 1. I can differentiate between the various types of ocean currents. 2. I can describe the effect.](https://reader035.fdocuments.us/reader035/viewer/2022062519/5697bfcf1a28abf838caa1d0/html5/thumbnails/3.jpg)
Currents “Rivers of the sea”2 types:
1. Surface Currents (10% of all currents)• Approx 0-400 m (1,300 ft) depth• Driven by horizontal wind circulation
2. Deep Currents (90% of all currents)• Driven by vertical thermohaline
circulation• Thermo = temp, haline = salt
![Page 4: *Refer to Chapter 11 in your Textbook. Learning Goals: 1. I can differentiate between the various types of ocean currents. 2. I can describe the effect.](https://reader035.fdocuments.us/reader035/viewer/2022062519/5697bfcf1a28abf838caa1d0/html5/thumbnails/4.jpg)
Surface Currents Map
![Page 5: *Refer to Chapter 11 in your Textbook. Learning Goals: 1. I can differentiate between the various types of ocean currents. 2. I can describe the effect.](https://reader035.fdocuments.us/reader035/viewer/2022062519/5697bfcf1a28abf838caa1d0/html5/thumbnails/5.jpg)
Normal Sea Surface Temperature:
![Page 6: *Refer to Chapter 11 in your Textbook. Learning Goals: 1. I can differentiate between the various types of ocean currents. 2. I can describe the effect.](https://reader035.fdocuments.us/reader035/viewer/2022062519/5697bfcf1a28abf838caa1d0/html5/thumbnails/6.jpg)
SST without Currents:
![Page 7: *Refer to Chapter 11 in your Textbook. Learning Goals: 1. I can differentiate between the various types of ocean currents. 2. I can describe the effect.](https://reader035.fdocuments.us/reader035/viewer/2022062519/5697bfcf1a28abf838caa1d0/html5/thumbnails/7.jpg)
Surface Boundary Currents:Eastern
ColdWideShallowSlow
WesternWarmNarrowDeepFast
![Page 8: *Refer to Chapter 11 in your Textbook. Learning Goals: 1. I can differentiate between the various types of ocean currents. 2. I can describe the effect.](https://reader035.fdocuments.us/reader035/viewer/2022062519/5697bfcf1a28abf838caa1d0/html5/thumbnails/8.jpg)
GyresGyre is a large circular flow of ocean water,
or current located in each ocean basin 5 major:
NAtlanticSAtlanticNPacificSPacificIndian
![Page 9: *Refer to Chapter 11 in your Textbook. Learning Goals: 1. I can differentiate between the various types of ocean currents. 2. I can describe the effect.](https://reader035.fdocuments.us/reader035/viewer/2022062519/5697bfcf1a28abf838caa1d0/html5/thumbnails/9.jpg)
CoriolisCoriolis is the effect of Earth’s rotation (the
apparent deflection) on moving objectsClockwise in the Northern hemisphereCounterclockwise in the Southern hemisphere
![Page 10: *Refer to Chapter 11 in your Textbook. Learning Goals: 1. I can differentiate between the various types of ocean currents. 2. I can describe the effect.](https://reader035.fdocuments.us/reader035/viewer/2022062519/5697bfcf1a28abf838caa1d0/html5/thumbnails/10.jpg)
Temporary Surface Currents: Some surface currents occur temporarily because of wind and the topography of the beach/ocean floor: 1. Longshore Currents2. Rip Currents3. Upwelling Currents
![Page 11: *Refer to Chapter 11 in your Textbook. Learning Goals: 1. I can differentiate between the various types of ocean currents. 2. I can describe the effect.](https://reader035.fdocuments.us/reader035/viewer/2022062519/5697bfcf1a28abf838caa1d0/html5/thumbnails/11.jpg)
Temporary Surface Currents: Longshore currents occur parallel to
shore because of wavesCan be harmful to beaches by causing
erosion
![Page 12: *Refer to Chapter 11 in your Textbook. Learning Goals: 1. I can differentiate between the various types of ocean currents. 2. I can describe the effect.](https://reader035.fdocuments.us/reader035/viewer/2022062519/5697bfcf1a28abf838caa1d0/html5/thumbnails/12.jpg)
Temporary Surface Currents: Rip currents occur perpendicular to
shore because of wind, waves, and other currents
Can be dangerous by pulling you out to sea
![Page 13: *Refer to Chapter 11 in your Textbook. Learning Goals: 1. I can differentiate between the various types of ocean currents. 2. I can describe the effect.](https://reader035.fdocuments.us/reader035/viewer/2022062519/5697bfcf1a28abf838caa1d0/html5/thumbnails/13.jpg)
Temporary Surface Currents: Upwelling currents occur due to the rising of
cold, nutrient rich waterThis is very important to coastal ecosystem productivity
![Page 14: *Refer to Chapter 11 in your Textbook. Learning Goals: 1. I can differentiate between the various types of ocean currents. 2. I can describe the effect.](https://reader035.fdocuments.us/reader035/viewer/2022062519/5697bfcf1a28abf838caa1d0/html5/thumbnails/14.jpg)
Deep Ocean Currents:Density controls deep ocean currents
Colder temp + Higher Salinity = Greater Density
Global Conveyer BeltA system of deep ocean currents that
connects all of the world’s ocean basins
![Page 15: *Refer to Chapter 11 in your Textbook. Learning Goals: 1. I can differentiate between the various types of ocean currents. 2. I can describe the effect.](https://reader035.fdocuments.us/reader035/viewer/2022062519/5697bfcf1a28abf838caa1d0/html5/thumbnails/15.jpg)
Global Conveyer Belt: