Exercise 1 question sheet Activity 1: Data Table 1 Run No. Cup Temp. (˚C) Time (sec.) Observations 1 C RT H 2 C RT H 3 C RT H Avg. C RT H 1. What are the independent and dependent variables? 2. Name at least three controlled variables. 3. State the hypothesis for Activity 1 as an "if/then" statement. 4. Was the hypothesis proven or disproven? Explain. 5. Were the results reproducible? Explain. 6. What variable was not completely controlled during the experiment, and what could have been changed to make this variable more constant? Activity 2: Activity 2 Table State the hypothesis. Smaller pieces of Alka-Seltzer tablets dissolve faster than larger pieces Identify the independent variable. Identify the dependent variable. List the controlled variables. How will the dependent variable be measured? Data Table 2 Run No. Tablet size Time (sec.) Observations 1 Sm Med Lg 2 Sm Med Lg 3 Sm Med Lg Avg. Sm Med Lg 1. Was the hypothesis for Activity 2 proven or disproven?