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Activity
Texas Instruments

Texas Instruments: P H

For Teachers 9th - 10th
Students use a pH sensor to measure the pH level of water in a stream or lake. They examine how air pollutants like sulphur dioxide, nitrogen oxides, and carbon dioxide cause acid rain, which affects the pH of water bodies and aquatic...
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Activity
US Environmental Protection Agency

Epa: Observing Buffers in Lakes, Ponds, and Streams

For Teachers 3rd - 8th
Explore buffers in lakes, ponds, and streams. "In this experiment, you will observe the effects of limestone on the acidity of water."
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Activity
US Environmental Protection Agency

Epa: Measuring the P H of Natural Water

For Teachers 6th - 8th
How acidic is your water? "In this experiment, you will measure the pH of natural water located near your home or school."
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Activity
US Environmental Protection Agency

Epa: Making a Natural P H Indicator

For Teachers 3rd - 8th
At this site you will find a step by step process for making a natural pH indicator. One of the main materials you need to have on hand is a red cabbage.
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Activity
US Environmental Protection Agency

Epa: Measuring Soil P H

For Teachers 3rd - 5th
This site has an experiment to find out how to measure the pH of your soil. The soil pH is an important condition that can affect the health of plants and animals.