Record your data into a table with three columns like the one below. Afterwards, answer the questions below to formulate further conjectures about data. The goal of this experiment is to investigate how the intensity of light changes with depth in water. Do not connect the CBL to a graphing calculator. You will need to decide what reading to record.
Some possibilities are to note the maximum, minimum, average or most frequent reading.
Place a light source at the top of the tube. Take a reading with no water but with your light source. Add a fixed amount of water of your choosing. Repeat to gather readings until the top of the tube is reached. You will want to gather about 10 readings.