Parts of waves
Waves are made of what?
Energy
When a sound wave's frequency increases what happens to the pitch?
It gets higher.
What EM wave do we mostly use for telecommunication?
Radio waves
The Crest or peak
What do you call the unit we measure sound frequency in?
Hertz or Hz
What EM wave do we use to look at bones?
and
Why does this wave show us only the bones?
X-rays
and
The bones absorb/reflect the waves.
What is the bottom part of a wave called?
The Trough or valley
True or false?
Sound can travel through the vacuum of space?
False
Sound needs a medium (solid, liquid, or gas) to travel through.
True or false?
Light can travel through the vacuum of space?
True.
Light does not need a medium to travel.
What is the distance between crests called?
Wavelength
Sound waves have their disturbance perpendicular to the direction the wave travels.
This is called a what type of wave?
Transverse wave.
What are TWO things UV (Ultraviolet) waves do?
and
How does it do both these things?
Can cause sunburns.
Sterilizing surfaces
and
It has high enough energy to enter through single cells and kill them.
What is the height of a wave called?
AND
What does it measure?
The amplitude
and
the waves energy
Sound waves need a medium to travel through. This makes them what kind of wave?
Mechanical.
What colors are the hottest and coldest.
Hottest = Blue/Purple (White as well)
Coldest = Red/yellow