Class 8 Science | Different Types of Sound

Science and Technology, Grade 8

Different Types of Sound

Infrasonic, audible, ultrasonic · Hearing range 20 Hz to 20 kHz · Uses of ultrasound

What We Will Be Able To Do

📊

Sort sound into three kinds by frequency

👂

State the range a person can hear

🩺

Explain the medical uses of ultrasound

🚢

Describe how sonar measures depth

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Presenter notes: Ask the class how many different sounds they can hear in the room right now. Then tell them there are more sounds around them than the ear can catch. That is what today's lesson is about.

Different Types of Sound Presentation

What We Will Be Able To Do

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