My Science Library Analyze This Testing Materials by Kelli Hicks Science Content Editor Shirley Duke Rourke Educational Media rourkeeducationalmedia com Teacher Notes available at rem4teachers com
Conducting Tests Water collects in a puddle and then seems to disappear as the day goes on Where did the water go How can you find out By observing experimenting measuring and testing materials scientists find out about how the world works They try to answer questions that might lead to new discoveries Did You Know Not all sources provide safe drinking water Scientists test water samples for bacteria viruses or various minerals that could make people sick By analyzing the contents researchers have developed ways of cleaning up contaminated water to make it safe for people to drink 4
A scientist tests polluted water to determine the effect of the pollutants on the animals that live there 5
