Carmen conducted an experiment to determine if listening to different types of music would affect a person’s pulse. Her hypothesis was that pulse rate would change with different types of music. Each person listened to seven different selections of music for 30 seconds each. Each person’s pulse was taken before the music and then after each 30-second interval of music. The pulses were taken again after the music selections were completed. Based on her experiment, Carmen concluded that a person’s pulse rate changed when the person listened to different types of music.




: A group of students studied how light intensity affects the rate of cell processes. In the experiment students exposed a few of the same type of plants to different light intensities. How the students measure cell process was by the amount of gas produced.



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