Did You P llute the Water?. Brainstorm! Sources of Water.

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Presentation transcript:

Did You P llute the Water?

Brainstorm! Sources of Water

What’s a watershed?

Brainstorm! Sources of Pollution

Bacteria

Wetlands

Filter feeders

Large Scale: How do we clean water?

Home Scale: How do we clean water?

Gulf Scale: How Do We Clean Up Pollution? © BP p.l.c

Meanwhile, oil in the Gulf continues to coat the sea floor and turn up in fishing nets. Scientists believe it could be years before the full extent of the damage to the region’s complex and sensitive ecosystems will be known.

With that in mind...

Who polluted the river? The story begins...

 Would you swim in this water?  Is this water safe for the animals?  Would you drink this water?

So, who did pollute the water?

Now it’s time for YOU to clean the water!

1. Work in pairs to predict which are the best materials for a filter. 2. Choose two materials: nylon, cotton balls, gauze, tulle, coffee filter. 3. Explain choice. 4. You will receive: 1. a cup of polluted water 2. an empty cup 3. a cup with holes in the bottom

Pre-experiment: 1. Make observations about water. 2. Build a filter. 3. Weigh your filter to nearest hundredth.

The purpose of a filter is to retrieve water, but remove the pollution.

Share your results and conclusions

 Did some filters work better than others? Why?  Advantages/Disadvantages for each material?  Now, how can your filter be improved?  How can we learn to make a better filter from nature?  How can we protect our watershed?

Identify

Extensions from classroom lesson  Model watershed with 11x17” crumpled paper ball; water-based markers for hills and valleys  Rain Pollution Pick Up – obstacle course for rain drops to navigate  “How Big is the Deep Horizon Oil Spill?” using Google Earth for familiar scale  Second run using a sand filter –differences?