What's New? Activity 3.3 Intensity of Light In this activity, you should be able to see that the brightness of light is dependent on the distance of the source. Materials needed: 1. Flashlight 2. Meter Stick Procedure: 1. Hold your flashlight and put it on. 2. Put off the light of your room. 3. Aim the flashlight on the wall, measure one meter away from it. Observe the brightness of light. 4. Move the light source farther away from the wall by 12 meter. Observe the brightness of light. 5. Move as far as you can in the room (by half meter). 6. Rank the observed brightness. Copy and complete this table in your notebook. Distance from the Wall (m) Observation Rank 1.0 1.5 2.0 2.5 3.0 What is your conclusion