Water Quality and the Murray–Darling Basin Student worksheet Answer 1. Identify 6 things that can make a river unhealthy. i. ______________________________________________________________________ ii. _______________________________________________________________________ iii. _______________________________________________________________________ iv. _______________________________________________________________________ v. _______________________________________________________________________ vi. _______________________________________________________________________ 2. Identify 6 aspects of water quality that we can measure. i. _______________________________________________________________________ ii. _______________________________________________________________________ iii. _______________________________________________________________________ iv. _______________________________________________________________________ v. ________________________________________________________________________ vi. _______________________________________________________________________ 3. How can we test the pH of water? __________________________________________________________________________ __________________________________________________________________________ 4. Why is the dissolved oxygen content of water important? __________________________________________________________________________ __________________________________________________________________________ __________________________________________________________________________ __________________________________________________________________________ Water Quality and the Murray–Darling Basin Investigate Design an investigation to compare the quality of water at two different locations 100m apart from each other along a river near school. Consider the following things when planning your investigation: • • • • • • 1. 2. 3. 4. What is your hypothesis? How will you control your experiment? What equipment or materials will you require? What method will you use? How many times will you repeat your test? How will you compile your results? Research What are freshwater macroinvertebrates? Name three different freshwater macroinvertebrate species. What are three things that humans can do to improve water quality? In pairs, make a 2½ minute documentary about the history of water quality in the Murray– Darling Basin. Include the following: a. What water quality issues or challenges has the Murray–Darling Basin faced? b. How have these challenges been solved?