| A | B |
|---|
| dissolved oxygen | measure of water quality indicating free oxygen dissolved in water |
| turbidity | the measure of how clear the water appears |
| secchi disk | a device used to measure the turbidity of a water source |
| water quality | describes the health of the water system |
| nephelometer | a device that projects a light beam |
| phenolphthalein | a liquid compound used to determine if a substance is basic by turning pink if it is above 10 |
| nitrates | a compound that contains nitrogen-based NO3 |
| indicator | a chemical material or solution which can be used to show the endpoint of a chemical reaction or chemical concentration |
| biological indicator | organisms or parts of organisms that are used to monitor the health of a water system, ecosystem, or environment |
| macro invertebrates | small, spineless creatures like crustaceans, worms, insects |
| litmus paper | used to determine the pH of a substance |
| temperature | the measure of how hot or cold something is |
| pH | the measure of how acidic or basic a substance is |
