Waves, Light and Sound

What happens when you see an object as orange?

• It is reflecting orange light and absorbing all other colors.

• It is emitting orange light and reflecting all other colors.

• It is reflecting all colors equally and appears white.

• It is absorbing orange light and reflecting all other colors.

What is the action of a wave bouncing off a surface called?

• Refraction

• Diffraction

• Reflection

• Absorption

What is the difference between sound and light waves?

• Sound waves are electromagnetic and can travel through a vacuum, while light waves are mechanical and require a medium to travel.

• Sound waves are mechanical and require a medium to travel, while light waves are electromagnetic and can travel through a vacuum.

• Sound waves travel faster than light waves in a vacuum.

• Light waves are audible, while sound waves are not.

What is amplitude in a wave?

• The distance between two consecutive crests of a wave.

• The height of the wave from its rest position, indicating the energy of the wave.

• The speed at which the wave travels through a medium.

• The frequency of the wave, measured in hertz.

What is pitch in sound?

• A measure of the loudness of a sound.

• The quality that makes a sound musical.

• How high or low a sound is, determined by the frequency of the sound wave.

• The duration of a sound wave.

What is refraction?

• Refraction is the bending of light as it passes from one medium to another.

• Refraction is the reflection of light when it hits a surface.

• Refraction is the absorption of light by a medium.

• Refraction is the scattering of light in different directions.

What is the speed of sound in air?

• 300 meters per second

• 343 meters per second

• 400 meters per second

• 250 meters per second

What do you get when sound waves are reflected off a hard surface?

• Reverberation

• Echo

• Absorption

• Diffraction

What is transparency?

• Transparency is the property of a material that allows light to pass through clearly.

• Transparency refers to the ability of a material to reflect light without any transmission.

• Transparency is the quality of being easily seen through or detected.

• Transparency is the measure of how much light a material can absorb.

What happens to the wavelength when the frequency of a wave increases?

• The wavelength decreases.

• The wavelength increases.

• The wavelength remains the same.

• The wavelength becomes unpredictable.