This science class document discusses a lesson on sound. The objective is for students to infer that sounds can move through solids, liquids, and gases. The class will analyze data comparing the speed of sound in different materials and observe how sound waves travel through different mediums by vibrating particles. Students will then evaluate statements about sound, such as that sound travels fastest in solids and slowest in gases, and cannot propagate in a vacuum without a medium.

1. SCIENCE CLASS
SOUND (Day 1)
S.Y. 2022-2023
LETECIA B. BALORO
Teacher
C & A Review Center
General Santos City

2. LESSON:
SOUND

3. OBJECTIVE/S:
Infer that sounds can move
through solids,liquids, and gases

4. ENGAGE:

5. GUIDE QUESTIONS:
How do you define sound?
How sound travels?

6. WHAT’S IN:

7. ACTIVITY 1: Analyzing Data and Comparing the speed
of sound in different materials
Explore:

10. GUIDE QUESTIONS:
What can you infer from the activity?
How sound waves travel through
mediums?

11. What can you observe on the
particles of different media?
Explain:

12. Sound travels through..
SOLIDS LIQUIDS GASES

13. Remember these..
• Sound waves need medium
• Sound travel faster in solids and slowest in
gases
• Sound travels at different speeds depending
on what medium it is passing through
• Sound cannot propagate in vacuum
• Without medium, sound waves would not be
transmitted

14. Elaborate:
ACTIVITY 1.2: Where sound travel faster?
A B

15. Elaborate:
ACTIVITY 1.2: Where sound travel faster?
A B

16. Evaluate:
Correct or incorrect, sound
waves can travel without
media
Answer: INCORRECT

17. Evaluate:
Where do sound waves travel?
Answer: Media

18. Evaluate:
Where does sound travel
fastest? slowest?
Answer: Solid and Gas

19. Evaluate:
How sound travels through
different medium?
Answer: Vibration of
particles

20. Evaluate:
Where does sound cannot
propagate?
Answer: Vacuum