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level: Sound waves in different media (HARD)

Questions and Answers List

level questions: Sound waves in different media (HARD)

Question	Answer
The boundary between two different materials where their properties change.	Material Interface
What is a material interface?	The boundary between two different materials where their properties change.
The bouncing back of a wave when it hits a surface through which it cannot pass.	Reflection
What is reflection?	The bouncing back of a wave when it hits a surface through which it cannot pass.
The passing of a wave through a medium and continuing to travel unchanged.	Transmission
What is transmission?	The passing of a wave through a material without changing its direction.
The bending of a wave as it passes from one medium to another due to a change in its speed.	Refraction
What is refraction?	The bending of a wave as it passes from one medium to another due to a change in its speed.
The process by which the energy of a wave is taken up by the medium it is passing through.	Absorption
What is absorption?	The process by which the energy of a wave is taken up by the medium it is passing through.
Reflection of sound waves off a surface, producing a repeated sound.	Echoes
What are echoes?	Reflection of sound waves off a surface, producing a repeated sound.
A transparent barrier made of glass allowing light to pass through (transmission).	Glass Window
What is an example of transmission?	Light waves passing through a glass window.
The number of complete cycles of a wave that pass a given point per unit time.	Frequency.
What determines the color of light reflected or absorbed by different objects?	Frequency.
Electromagnetic waves within the visible spectrum that travel as rays of light.	Light Waves.
What type of waves are transmitted through a glass window?	Light waves.
The speed of an object in a particular direction.	Velocity
What is velocity?	The speed of an object in a particular direction.
Vibrations that travel through a medium, such as air, and can be heard when they reach a person's or animal's ear.	Sound Waves
What are sound waves?	Vibrations that travel through a medium and can be heard when they reach a person's or animal's ear.
The number of complete cycles of a wave that occur in a unit of time.	Frequency
What is frequency?	The number of complete cycles of a wave that occur in a unit of time.
How high or low a sound is perceived to be, depending on the frequency of the sound wave.	Pitch
What does the frequency of a sound wave affect?	The pitch we hear.
The distance between successive crests of a wave, especially points in a sound wave or electromagnetic wave.	Wavelength
What is wavelength?	The distance between successive crests of a wave.
A mathematical equation that relates the velocity, frequency, and wavelength of a wave.	Wave Equation
What does the wave equation relate?	The velocity, frequency, and wavelength of a wave.
A state of matter characterized by particles that are closely packed together and have fixed positions.	Solids.
In which state of matter do sound waves travel faster compared to air?	Solids. Sound travels faster in a solid than in a gas because the particles are closer together and are more able to pass on vibrations.
A mixture of gases, primarily nitrogen and oxygen, that surrounds the Earth and is breathed by living organisms.	Air
What happens to the wavelength of a sound wave when it passes from air into a solid?	It increases.