Frequency

Frequency=Number of waves per second and the unit is Hertz (Hz)
High frequency= Short wavelength
Low frequency= Tall wavelength

Sounds with high intensity are often described as having a high volume
High or low sound is a pitch
High putch= High frequency
Low [itch=Low frequency

Time period- time for one complete wave to pass a point
Example: If a wave has a frequency of 2Hz the time period would be 0.5 seconds
Time perood= 1(Second) divided by frequency

An oscilloscope is a machine that shows the wave shape of an electrical signal