February 21 st 2013 Warmup Describe how invasive species can be harmful to a native ecosystem Give an example Cornell Notes pg 27 How to Clean Up Oil Spills Introduce Oil Spill Lab ID: 404439
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Agenda: February 21st, 2013Warm-up: Describe how invasive species can be harmful to a native ecosystem. Give an exampleCornell Notes (pg. 27)How to Clean Up Oil SpillsIntroduce Oil Spill LabWork on pre-lab questionsHomework: Finish pre-lab questions (3 questions)
How to Clean Up Oil SpillsSlide2
Oil tankers are the largest ships to sail in the ocean
Usually, these ships are safeSlide3
An oil rig exploded in the Gulf of MexicoAn estimated 210 million gallons of oil leaked into the Gulf over a 3 month periodExcept on April 20th, 2010Slide4
Deepwater Horizon Oil SpillThe spill as seen from space on May 24th, 2010Slide5
When these spills happen, oil spreads out over the surface of the water in a large SLICKSlide6
These oil slicks can cause huge environmental damagesHowever, there are numerous ways to contain them, and clean them upSlide7
Basically a large float that surrounds the slick As the boom is pulled into a boat, they can skim the oil off the topThe oil slick shrinks until it is completely cleaned upMethod 1: Containment boomSlide8Slide9
Vacuuming oil off the surface of the waterSlide10
When detergent is sprayed on oil slicks, the oil breaks up into clumps which sink to the bottom of the oceanMethod 2: Spray detergent on the spillSlide11
These bacteria eat oil slick as foodAs they reproduce, they eat more and more oilWhen slick is gone, their food source is used up and the bacteria dieMethod 3: Oil-eating bacteriaSlide12
If a slick is small, it can sometimes be absorbed by special absorbent padsThen, these pads can be removed from the surface of the waterMethod 4: Absorbing oil