Light & Sound Flashcards
No light can pass through it
Opaque
Some light can pass through it
Translucent
All light passes through it
Transparent
When light is reflected, the light rays hit an object and bounce off at an angle ________________ to the angle at which they hit they object.
Identical
The ______________ the surface is, the more reflective it is.
Smoother
If a surface is _______________, the light waves scatter in different directions.
Rough
Objects with ________________ don’t reflect light in a straight path
Curves
________________________ is the bending of light as it passes from one transparent object into another.
Refraction
When light is refracted, the light wave is _________________, and the direction in which is travels is changed
bent
A form of energy produced by vibrating objects
Sound
________________________ produce sound when they are struck or strummed.
Instruments
Sound energy travels in ____________________ from the source outward.
Waves
Sound energy needs a ____________, a ______________, or a ______________ in order to move.
liquid, solid, or gas
The strength of vibrations changes the _________________.
Volume
A light touch will produce a sound with a ________________ volume.
Lower
A forceful touch will produce a sound with a ______________ volume.
Louder
The speed of vibrations changes the _______________ of a sound.
Pitch
Fast vibrations cause ____________ pitched sounds.
high
Slow vibrations cause ___________ pitched sounds
low
High pitched sounds vibrate _______________
quickly
High pitched sounds have ____________ frequency and ______________ wavelength
high, short
Low pitched sounds vibrate
slowly
Low pitched sounds have ____________ frequency and ______________ wavelength
low, long
