LEARNING ACTIVITY SHEETS (LAS) Grade 7 - Science 7 Activity 2: Mini-Lab Sound Production DIRECTIONS: Perform the task as described in the situation. Situational Task: You were assigned by your teacher to conduct a simple investigation on how sound is produced and changed using the following materials and criteria. Materials: four (4) empty glass bottles/empty glasses/empty soft drink bottles of the same size tap water spoon Criteria: • Produce different sounds (pitch) • Bottles must be of the same size • Use only the given materials Experimental Set-up / Design of the experiment Procedure: 1. Prepare the four (4) empty bottles, tap water, and spoon spoon QUE 2. nagra the experimental set up as shown in the Emply bottle with 1/4 amount with 1/2 amount with 3/4 amount of tap water of tap water 3. Tap each bottle with a spoon, listen and observe of tap water while tapping then record your findings. Figure 1. Experimental Set-up Guide Questions 1. What did you produce when you tapped a bottle with a spoon? 2. What did you observe when you tapped a. an empty bottle? b. a bottle with 1/4 amount of tap water? c. a bottle with 1/2 amount of tap water? d. a bottle with 3/4 amount of tap water? GON A Discussion How is sound produced and changed?​