Sound Waves

What is sound absorption?

• Sound absorption is the process of amplifying sound waves by a material or surface.

• Sound absorption is the process of converting sound waves into light waves.

• Sound absorption is the process of creating sound waves by a material or surface.

• Sound absorption is the process of reducing the reflection or transmission of sound waves by a material or surface.

How are sound waves transmitted?

• Through the emission of light waves.

• Through the movement of electrons in a medium.

• Through the transfer of heat energy in a medium.

• Through the vibration of particles in a medium.

What happens when sound waves are reflected?

• They create a new sound wave.

• They continue in the same direction.

• They bounce off a surface and change direction.

• They disappear completely.

Which materials are good at absorbing sound waves?

• rubber, leather, paper, concrete

• glass, metal, wood, plastic

• water, air, oil, stone

• foam, fabric, carpet, acoustic panels

What are some examples of sound transmission?

• speaking on a telephone, listening to music through headphones, hearing someone's voice through a window, sound traveling through air

• whispering to someone in a quiet room, hearing a car horn from a distance, sound traveling through a vacuum

• playing a musical instrument, hearing a dog bark from a distance, sound traveling through a solid object

• speaking on a telephone, listening to music through headphones, hearing someone's voice through a wall, sound traveling through water

How does sound reflection affect the quality of sound?

• Sound reflection always enhances the quality of sound.

• Sound reflection only degrades the quality of sound.

• Sound reflection can either enhance or degrade the quality of sound.

• Sound reflection has no effect on the quality of sound.

What are some common materials that reflect sound waves?

• Paper, fabric, and cardboard

• Metals, glass, and concrete

• Water, air, and soil

• Wood, plastic, and rubber

What are the factors that affect sound transmission?

• color, texture, shape

• distance, medium, temperature, humidity, obstacles

• frequency, amplitude, wavelength

• weight, size, density

How can sound reflection be minimized in a room?

• By using sound-absorbing materials such as acoustic panels, curtains, carpets, and furniture.

• By installing sound-reflecting surfaces such as mirrors and glass panels.

• By removing all furniture and objects from the room.

• By using loudspeakers to create more sound in the room.