Transcript Did You Pollute the Water?

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
Is
you swim in this water?
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!
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.
1.
2.
3.
a cup of polluted water
an empty cup
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?