Sound

Science

Question

Sound

Not quite remember

I easily remember

The production of sound

Sound is produced through the vibration

The production of sound by using a flute

When the instrument player blows air into the flute, the air inside the flute will vibrate and produce sound

The properties of sound

Sound can travel in all directions & can be reflected

Surfaces that can reflect sound

Hard surface

Echo

Is a sound produced when a sound is reflected on a hard surface

Ultrasound

Is a sound that cannot be heard by humans but can be heard by animals like bats, dolphins and whales to navigate and detect the location of their prey

Sonar

A technology that reflects ultrasonic sound to detect objects in the water

Uses of sound

Allow us to communicate, make music, can be used as emergency alert & provide notification

The consequences of sound pollution

It can make communication difficult, can cause disturbance, stress and hearing disability

Ways to reduce sound pollution

Use ear protectors and use sound absorber

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Sound

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