Light
How does light travel?
straight line
Sound is caused by _________.
vibrations
Morse code used what to communicate over long distances on ships long ago?
light
An object that lets no light through.
opaque
When something moves back and forth very fast (causes sound).
vibrations
Faster or slower vibrations change what about a sound.
pitch
A telegraph used what to communicate over long distances?
sound
An object that lets almost all light through.
transparent
How high or low a sound is.
pitch
These types of objecs only allow only some light to pass through.
translucent
Changing the size of vibrations changes what about a sound?
volume
phone
When light bounces off an object like a mirror.
reflect
How loud or soft a sound is.
volume
A sound wave can cause other objects to vibrate. True or false
True
Name something that uses light to communicate.
traffic lights, subtitles
An object that lets some light through.
translucent
The part of the ear that vibrates when sound waves hit it.
Ear drum
The reason you see only the color green when you look at an object.
What is the object is absorbing all of the colors except green (or it is only reflecting green).
Some musical instruments do not use vibrations to make their music. True or false
False
Name something that uses both light and sound to communicate.
emergency vehicles
When light bends as it goes through an object like a water drop or prism and sometimes causes a rainbow to appear.
refract
They are different thicknesses.