Am I correct.? please indicate independent variable, dependent variable and controlled variable

Worksheet 4 - NS - FORMAL problems. Research questions can help to direct your research and make you think deeper about ordinary AIM FOR NATURAL SCIENCES PROJECT / INVESTIGATION: Amy and Khotso want to find out how they can make the buzzer sound louder. They want to determine how the number of cells in series will affect the loudness of their buzzers OR how the input-voltage affects the output power of the buzzer. STEP 1-INVESTIGATIVE QUESTION Formulate an INVESTIGATIVE QUESTION based on the aim of the project. How does the number of Cells In Series affect the loud. ness of the buzzer ! Or How does the !In pat..Voltage.. ...effect... the. output power of the buzzer ? . . . . . . . m STEP 2- HYPOTHESIS Formulate a HYPOTHESIS for this investigation. Increasing * the the number of... cells In Series ..!.....will Increase the loudness. . of. the buzzer ? because.. more. cell s....!! !.... ..provide...a....higher. ....Voltage. ...leading to more paver output. . N in