Did You P llute the Water?Did You P llute the Water?

Brainstorm!Brainstorm!

Sources of WaterSources of Water

What’s a watershed?What’s a watershed?

Brainstorm!Brainstorm!

Sources of PollutionSources of Pollution

Bacteria

Wetlands

Filter feeders

Large Scale:Large Scale:How do we clean water?How do we clean water?

Home Scale: Home Scale: How do we clean water?How do we clean water?

Gulf Scale: How Do We Gulf Scale: How Do We Clean Up Pollution?Clean Up Pollution?

© BP p.l.c

Meanwhile, oil in the Gulf Meanwhile, oil in the Gulf continues to coat the sea floor continues to coat the sea floor

and turn up in fishing nets. and turn up in fishing nets.

Scientists believe it could be years Scientists believe it could be years

before the full extent of before the full extent of

the damage to the region’s complex the damage to the region’s complex and sensitive ecosystems will be and sensitive ecosystems will be

known.known.

With that in mind . . . With that in mind . . .

Who polluted the river?Who polluted the river?

The story begins . . .The story begins . . .

Would you swim in this water?Would you swim in this water?

Is this water safe for the animals?Is this water safe for the animals?

Would you drink this water?Would you drink this water?

So, who So, who diddid pollute the pollute the

water?water?

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

1.1. Work in pairs to predict which are the Work in pairs to predict which are the best materials for a filter.best materials for a filter.

2.2. Choose two materials: nylon, cotton Choose two materials: nylon, cotton balls, gauze, tulle, coffee filter.balls, gauze, tulle, coffee filter.

3.3. Explain choice.Explain choice.

4.4. You will receive: You will receive: 1.1. a cup of polluted watera cup of polluted water

2.2. an empty cupan empty cup

3.3. a cup with holes in the bottoma cup with holes in the bottom

Pre-experiment:Pre-experiment:

1.1. Make observations about Make observations about water.water.

2.2. Build a filter.Build a filter.

3.3. Weigh your filter to Weigh your filter to nearest hundredth.nearest hundredth.

The purpose of a filter The purpose of a filter is to retrieve water, is to retrieve water,

but remove the but remove the pollution.pollution.

Share your results and Share your results and conclusionsconclusions

Did some filters work better than others? Did some filters work better than others? Why?Why?

Advantages/Disadvantages for each Advantages/Disadvantages for each material?material?

Now, how can your filter be improved?Now, how can your filter be improved? How can we learn to make a better filter How can we learn to make a better filter

from nature?from nature? How can we protect our watershed?How can we protect our watershed?

Identify

Extensions from Extensions from classroom lessonclassroom lesson

Model watershed with 11x17” crumpled paper Model watershed with 11x17” crumpled paper ball; water-based markers for hills and valleysball; water-based markers for hills and valleys

Rain Pollution Pick Up – obstacle course for Rain Pollution Pick Up – obstacle course for rain drops to navigaterain drops to navigate

““How Big is the Deep Horizon Oil Spill?” How Big is the Deep Horizon Oil Spill?” using Google Earth for familiar scaleusing Google Earth for familiar scale

Second run using a sand filter –differences?Second run using a sand filter –differences?