Frequency

Choose the correct answer.

Frequency is how we explain how often a process .....?	What is used to describe the motion of waves and states how often a complete cycle of the wave motion goes through in a given time?	The unit of frequency is measured in Hertz which was named after a guy called ......?
moves sound	frequency	Hans Hertz
changes tone	waves	Heinrich Hertz
repeats it self	motion	Helmut Hertz

In what year did Hertz begin working on electromagnetic radiation?	By using a rapidly oscillating electric spark he produced radio waves and was able to measure their ....?.... and what?	Light, sound, radio waves and AC electrical power all have a ....?..... operating frequency.
1887	veracity & their wavelength	set
1883	veneer & their wavelength	powerful
1901	velocity & their wavelength	obscure
	.