Light and Sound MTA Flashcards
Light and Sound Mid Topic Assessment
What happens if you increase the amplitude of a sound wave?
The volume increases.
What is wavelength?
The length of one wave, from peak to peak or trough to trough.
What is frequency measured in (the units)?
Hz, Hertz
What will a wave with a high frequency sound like?
High pitched.
What will a wave with a low frequency sound like?
Low pitched.
What is a reflection of a sound wave called?
Echo
Why are echoes always quieter than the original sound?
Some of the sound wave’s energy is absorbed by the surface the wave is reflecting off.
Through which state does sound travel fastest?
Solid.
Why does sound travel faster in water than in air?
The particles in water are closer together so it takes less time for each particle to transfer its energy to the next one.
Name the 2 types of wave.
Transverse, Longitudinal
In what direction do the particles oscillate in a transverse wave?
At 90 degrees to direction of the wave.
In what direction do the particles oscillate in a Longitudinal wave?
Parallel to the direction of the wave.
What type of wave is a sound wave?
Longitudinal
What causes a sound wave?
A vibration
Why cant a sound wave travel through a vacuum?
There are no particles to transfer the energy.
What do all waves transfer?
Energy
What is the speed of sound in air?
340 m/s
Why do you see the flash of a firework before you hear the BANG!?
Light travels much faster then sound.
Which part of the ear vibrates first when receiving a sound wave.
The ear drum.
What is an echo?
A reflected sound wave.
What equation that links speed, distance and time?
speed = _______ / ______
Speed (m/s) = Distance (m) / Time (s)
Describe the amplitude and frequency of a low pitched, loud sound wave.
Large amplitude and a low frequency.
Describe a high pitched, quiet sound wave.
Small amplitude and a high frequency.
What is the name of this part of the ear?
Auditory canal
