Design an experiment to test the effects of a changing variable on the speed of sound. You will need to run three trials so that you can test three independent variables, one at a time: temperature (hot and cold water), a solution (the drink mix), and a disturbance (adding bubbles to the water). The dependent variable is the speed of sound, which you can measure by recording observations about the pitch of the sound. Since pitch is directly related to frequency, the higher the pitch of the sound, the higher the frequency (and speed) of the waves. Then, create a data table to record your observations while completing the experiment. Be sure to include a column in your data table to record time. Temperature Solution Disturbance Observations Time Hot Salt Cold Salt Use metal teaspoons to tap on the mugs to create sound. You may tap on the inside or bottom of the mug. Fill the mugs three quarters of the way full with various temperatures or solutions of water. You may wish to mark a line on each mug to be sure the amounts of water remain consistent during the trials. You will repeat this process several times to