🔊 Part 1: Multiple Choice

1. What is the unit used to measure the loudness of sound?

Hertz (Hz)

Decibels (dB)

Watts (W)

Meters (m)

2. At what decibel level can permanent hearing damage begin to occur?

60 dB

85 dB

100 dB

120 dB

3. Which part of the ear contains tiny hair cells that can be damaged by loud sounds?

Outer ear

Middle ear

Inner ear (cochlea)

Eardrum

4. Which activities can cause hearing damage? (Check all that apply)

Listening to loud music through headphones

Attending rock concerts without ear protection

Using power tools without ear protection

Having a normal conversation

📝 Part 2: Short Answer Questions

5. Explain how loud sounds can damage the hair cells in your inner ear.

6. List three ways you can protect your hearing from sound damage.

7. Fill in the blanks:

Prolonged exposure to sounds over _______ decibels can cause permanent hearing loss. The condition where you hear ringing in your ears is called _____________.

8. Why is hearing damage from loud sounds often permanent?

🎯 Part 3: Critical Thinking

9. A friend tells you that listening to loud music through earbuds is safe because the sound is going directly into your ear, not affecting others. Explain why this reasoning is incorrect.

10. Design a poster slogan that would encourage teenagers to protect their hearing. Write your slogan below: