lesson 1
how does sound travel?
sound travels in waves
how does light travel?
light travels in waves.
True Or False
the difference in the loudness of a sound is called volume
True
what do lenses do
they bend light rays
what's amplitude?
the height of a wave from its trough or crest to it's midpoint
what is convex?
a mirror the has a surface that curves outward
what is a wave
is a disturbance that transfers energy from 1 point to another.
what is the Law Of Reflection?
is the angle between an incoming light ray and a surface is equal to the angle between the reflection light ray and the same surface
what are decibels?
how the volume of sound is measured.
what kind of lens do u need when you have farsighted vision?
convex lens