Students investigate four water samples. They use direct observation and hardness indicators to understand its unique properties. They also observe and study the process of evaporation. They collect water from local sources and examine its properties. During the activity, students develop the concept of water quality.
Clear communication is an essential part of doing science.
It enables scientists to inform others about their work, expose their ideas to evaluation by other scientists, and stay informed about scientific discoveries around the world. Doing science involves many different kinds of work and engages men and women of all ages and backgrounds. Most tools of today are different from those of the past but many are modifications of very ancient tools. Technology enables scientists and others to observe things that are too small or too far away to be seen without them and to study the motion of objects that are moving very rapidly or are moving hardly at all. Measuring instruments can be used to gather accurate information for making scientific comparisons of objects and events and for designing and constructing things that will work properly.