Sound: Interactions of Sound Waves

The video tutorial explores how sound waves interact through diffraction, refraction, and interference. Diffraction allows sound to bend around objects, enabling us to hear sounds from unseen sources. Refraction occurs when sound waves change direction due to variations in medium density or temperature. Interference involves the combination of sound waves, which can be constructive, increasing sound intensity, or destructive, decreasing it.

What phenomenon allows you to hear sounds from another room even if you can't see the source?

• Absorption

• Diffraction

• Reflection

• Echo

What happens to sound waves when they enter a medium with a different density?

• They absorb

• They refract

• They diffract

• They reflect

Which type of sound wave interaction involves waves bending as they pass through different materials in the Earth?

• Reflection

• Diffraction

• Interference

• Refraction

What is the result of destructive interference between sound waves?

• Increased sound intensity

• Sound waves cancel each other completely

• Decreased sound intensity

• No change in sound intensity

When two sound waves combine to increase sound intensity, what type of interference is occurring?

• Destructive interference

• Constructive interference

• Neutral interference

• Harmonic interference