Sound Flashcards
What are the two types of sound waves?
Transverse waves and longitudinal waves.
What are sound waves?
Vibrations or oscillations that transfer energy.
What is the trough?
The bottom of a sound wave.
What is the peak?
The top of a sound wave.
What is amplitude?
The distance from the restline to the top or the bottom of the wave.
What is the wavelength?
The distance from one point of a wave to the same point on the next wave.
what is frequency?
A number of waves per second.
How fast can light travel?
Up to 300 metres per sec.
What can sound not travel through?
The vacuum, also known as space.
Why can’t sound travel through space?
Because space has no particles and sound needs particles to travel through.
How does an echo happen?
When a sound wave bounces off an object.
Why don’t echoes happen all the time?
Because fabric absorbs sound waves.
What substance does sound waves travel faster in and why? Solid, liquid, or gas.
They travel quicker in solids because the particles are closer together which makes it faster to travel in.
What substance does sound waves travel slower in and why? Solid, liquid, or gas.
They travel slower in liquids because the particles are spread out which makes it slower to travel in.
What changes when the loudness of a note changes?
The loudness of a sound can change by amplitude. The higher the amplitude, the louder the sound.
