DO NOW From what you learned and observed in the density investigation, hypothesize what you think...
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Transcript of DO NOW From what you learned and observed in the density investigation, hypothesize what you think...
![Page 1: DO NOW From what you learned and observed in the density investigation, hypothesize what you think happens in the red areas on the map shown, and why you.](https://reader030.fdocuments.in/reader030/viewer/2022032709/56649ec85503460f94bd51b3/html5/thumbnails/1.jpg)
DO NOW• From what you learned and observed in the density investigation,
hypothesize what you think happens in the red areas on the map shown, and why you think this (think about density of water and temperature!)
![Page 2: DO NOW From what you learned and observed in the density investigation, hypothesize what you think happens in the red areas on the map shown, and why you.](https://reader030.fdocuments.in/reader030/viewer/2022032709/56649ec85503460f94bd51b3/html5/thumbnails/2.jpg)
Objectives
• To understand role of density and movement of water in ocean circulation
• To apply this knowledge to your island
![Page 3: DO NOW From what you learned and observed in the density investigation, hypothesize what you think happens in the red areas on the map shown, and why you.](https://reader030.fdocuments.in/reader030/viewer/2022032709/56649ec85503460f94bd51b3/html5/thumbnails/3.jpg)
OCEAN CURRENTS
![Page 4: DO NOW From what you learned and observed in the density investigation, hypothesize what you think happens in the red areas on the map shown, and why you.](https://reader030.fdocuments.in/reader030/viewer/2022032709/56649ec85503460f94bd51b3/html5/thumbnails/4.jpg)
current •mass of water moving from
one place to another•like a river within the ocean
![Page 5: DO NOW From what you learned and observed in the density investigation, hypothesize what you think happens in the red areas on the map shown, and why you.](https://reader030.fdocuments.in/reader030/viewer/2022032709/56649ec85503460f94bd51b3/html5/thumbnails/5.jpg)
importance:
•moves drifting organisms from place to place – plankton, disperses young
•carries eggs and larvae of organisms that have external fertilization
•brings food, oxygen•carries away waste,pollutants
![Page 6: DO NOW From what you learned and observed in the density investigation, hypothesize what you think happens in the red areas on the map shown, and why you.](https://reader030.fdocuments.in/reader030/viewer/2022032709/56649ec85503460f94bd51b3/html5/thumbnails/6.jpg)
three types of currents
• surface currents
• thermohaline circulation (currents)
• wind-driven vertical currents (upwelling)
![Page 7: DO NOW From what you learned and observed in the density investigation, hypothesize what you think happens in the red areas on the map shown, and why you.](https://reader030.fdocuments.in/reader030/viewer/2022032709/56649ec85503460f94bd51b3/html5/thumbnails/7.jpg)
surface currents•wind driven currents•occur at surface•horizontal currents•caused by friction between wind
and water - wind pushes water
![Page 8: DO NOW From what you learned and observed in the density investigation, hypothesize what you think happens in the red areas on the map shown, and why you.](https://reader030.fdocuments.in/reader030/viewer/2022032709/56649ec85503460f94bd51b3/html5/thumbnails/8.jpg)
surface currentsCoriolis effect•causes moving objectsin northern hemisphereto veer clockwise•causes moving objectsin southern hemisphereto move counter-clockwise
![Page 9: DO NOW From what you learned and observed in the density investigation, hypothesize what you think happens in the red areas on the map shown, and why you.](https://reader030.fdocuments.in/reader030/viewer/2022032709/56649ec85503460f94bd51b3/html5/thumbnails/9.jpg)
surface currentsCoriolis effect
![Page 10: DO NOW From what you learned and observed in the density investigation, hypothesize what you think happens in the red areas on the map shown, and why you.](https://reader030.fdocuments.in/reader030/viewer/2022032709/56649ec85503460f94bd51b3/html5/thumbnails/10.jpg)
surface currentsgyre•massive circular system of wind-driven
surface currents•cover whole oceans•clockwise inNorthern hemisphere•counter-clockwisein Southernhemisphere
![Page 11: DO NOW From what you learned and observed in the density investigation, hypothesize what you think happens in the red areas on the map shown, and why you.](https://reader030.fdocuments.in/reader030/viewer/2022032709/56649ec85503460f94bd51b3/html5/thumbnails/11.jpg)
Surface currents
Which current(s) directly affect the island?Where do you predict oil would travel if a spill occurred?
![Page 12: DO NOW From what you learned and observed in the density investigation, hypothesize what you think happens in the red areas on the map shown, and why you.](https://reader030.fdocuments.in/reader030/viewer/2022032709/56649ec85503460f94bd51b3/html5/thumbnails/12.jpg)
thermohaline circulation (currents)•causes deep ocean circulation•vertical currents•Temperature (thermo) and salinity
(haline) cause water density differences•due to density differences, water
masses rise and fall
![Page 13: DO NOW From what you learned and observed in the density investigation, hypothesize what you think happens in the red areas on the map shown, and why you.](https://reader030.fdocuments.in/reader030/viewer/2022032709/56649ec85503460f94bd51b3/html5/thumbnails/13.jpg)
thermohaline circulation (currents) REMEMBER THE DENSITY LAB?
↑ salinity = ↑ density = water mass sinks↑ temp. = ↓ density = water mass floats
![Page 14: DO NOW From what you learned and observed in the density investigation, hypothesize what you think happens in the red areas on the map shown, and why you.](https://reader030.fdocuments.in/reader030/viewer/2022032709/56649ec85503460f94bd51b3/html5/thumbnails/14.jpg)
thermohaline circulation (currents)
•when combined with surface currents, results in conveyor belt movement of water around globe
•Wind blows surface currents to colder areas-> Water cools -> becomes dense and sinks -> Thermohaline circ. moves water to equator-> water warms and rises
![Page 15: DO NOW From what you learned and observed in the density investigation, hypothesize what you think happens in the red areas on the map shown, and why you.](https://reader030.fdocuments.in/reader030/viewer/2022032709/56649ec85503460f94bd51b3/html5/thumbnails/15.jpg)
wind driven vertical currents = upwelling•wind blows, moves water
away, causes new water to rise up to replace it
![Page 16: DO NOW From what you learned and observed in the density investigation, hypothesize what you think happens in the red areas on the map shown, and why you.](https://reader030.fdocuments.in/reader030/viewer/2022032709/56649ec85503460f94bd51b3/html5/thumbnails/16.jpg)
Areas of Upwelling= Increased productivity
• Colder, denser water from deep ocean is more nutrient rich than warmer water at surface.
• Areas of upwelling usually indicate higher primary production
• Higher primary production= more primary consumers, more secondary consumers, etc.
• 25% of global fish catch come from 5 areas of upwelling that equal 5% of ocean area!
![Page 17: DO NOW From what you learned and observed in the density investigation, hypothesize what you think happens in the red areas on the map shown, and why you.](https://reader030.fdocuments.in/reader030/viewer/2022032709/56649ec85503460f94bd51b3/html5/thumbnails/17.jpg)
Global Wind Patterns
Based on the location of the island ( ), where on the island would upwelling occur?How would this affect marine ecosystems around the island?