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Supplement Activity Number 2 - A Graphing Exercise (Optional)

Purpose

To allow students to measure the ground-level ozone in their area, and to examine the trend over a specific length of time.

Materials:

local ground-level ozone readings from the internet or local smog/air quality forecast
graph paper

Method:

Obtain the local ozone reading for each day.
Have the students graph the ozone readings for the week and go over the discussion points

REQUIRED

Discussion Points:

What does your graph tell you about the ozone level in your area?
During what part of the day is the ozone level highest? Why do you think that is?
What contributes to the ozone level in your area?
What is being done to decrease harmful ground-level ozone? (Possible answers-smokestacks and cars now have better pollution controls. People are becoming more conscious of conserving energy.)

Have the students record their observations. Keep a log of the dates and measurements for next year's students to compare their measurements with. It would be a good idea to keep a record of temperatures and cloud cover with this for the students to observe the trends together.