Vocabulary
When light bounces back off an object.
Reflection
What is needed to create all sounds?
Vibrations
This occurs when light waves hit a flat or shiny surface and bounce back.
Reflection
Do sound waves need a medium to travel?
Do light waves need a medium to travel?
No
When light hits a rough or bumpy surface and light rays scatter in many different directions.
Diffuse Reflection
What kinds of materials are needed to absorb sound?
Soft materials
When light almost entirely passes through an object.
Transparency
Sound waves with longer wavelengths will produce what kind of sound?
Lower pitch
What kinds of objects allow light waves to pass through easily?
Transparent objects
An object that does not allow light to pass through.
Opaque
Blowing across the top of a glass bottle full of water will create what kind of sound?
High pitch
This occurs when light waves are taken into a substance.
Absorption
If I'm playing the drums and want to make the sound louder, what do I need to do?
Hit the drums with more force
What kinds of objects block light and do not allow it to pass through?
Opaque objects
When light rays bounce off at the same angle, creating a very clear image.
Specular Reflection
What will tightening guitar strings do to the sound?
Increase VPS/Make the pitch higher
This occurs when light waves enter a new substance and bend.
Refraction
In what medium does sound travel the fastest?
Solids
What kinds of objects allow some light to pass through, scattering it?
Translucent objects
The volume of a sound is determined by this.
Amplitude
Tapping a glass bottle that is very full of water will create what kind of sound?
Low pitch
What object refracts white light into a rainbow?
Prism
How can pitch be changed?
By changing how fast an object vibrates
What are all lenses examples of?
Refraction