Vocabulary
A pattern of motion that transfers energy from one place to another.
What do waves transfer?
energy
Sound is energy that moves through
vibrations
Every message needs a __(1)___ and a __(2)____
(1) sender and (2) receiver
The number of wave peaks that pass by a given point every second is _____.
The highest point of a wave is called the
peak
Sound waves can travel through what?
air, liquid, and solids
What do the patterns of dots and dashes in Morse code represent?
To ________ something is to send it from one place to another.
transmit
The height of a wave is called the
amplitude
Would you hear a clearer sound through a wool hat or a glass window? Why?
Glass window; thick fabrics muffle sounds and smooth material like glass make a good medium for sound waves to travel through
What are the patterns of dots and dashed in Morse code similar to in binary code?
ones and zeros
A __________ is an invisible wave similar to a light wave but with a much longer wavelength.
radio wave
The distance between two peaks or troughs is the
wavelength
What happens to the wavelength and amplitude of a transverse wave when you add more energy?
The wavelength decreases; the amplitude increases
Which two parts of a wave can be changed to create a code?
amplitude and frequency
___________ waves are waves in which the vibration is forward and backward.
Longitudinal Waves
What is the difference between a transverse wave and a longitudinal wave?
Transverse waves have peaks and can represent water waves.
Longitudinal waves have compressions and rarefactions and can represent sound waves.
A low frequency sound wave has a __(1)_____ pitch, makes a low sounds, and have ___(2)_____ wavelengths.
(2) long
What is the first step for digitally transmitting and receiving sounds?
Sounds are translated into binary code.