This science fair project was performed to investigate tongue sensitivity: to which type of taste (bitter, sour, salty or sweet) is the tongue most sensitive? Participants were given salt, sugar, lime juice and bitter chocolates.
1. For this science fair project, the independent variable is the type of food given to participants (sugar, salt, lime juice and bitter chocolate). Each participant is to tell the tester which food he/she tastes most acutely. These choices are the dependent variable. The constants (control variables) are the amount of food the participants are given and the number of participants. 2. 50 participants are engaged. Select participants from both genders, and from different ages. 3. The participants are tested one at a time. The first participant is blindfolded. This is because we don't want them to know what they .....
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