How can radio waves be described?
Radio waves are mechanical waves that must move through a medium.
Radio waves are mechanical waves that require no medium.
Radio waves are electromagnetic waves that require no medium.
. Radio waves are electromagnetic waves that must move through a medium.
Which of the following is NOT an example of a mechanical wave?
sunlight
vibrations of a guitar string
ocean waves
sound waves
What is amplitude?
the maximum displacement from the midpoint between the crest and trough
the top of the wave
the horizontal distance the waves travels
the number of waves that pass a specific point in a specific time
Which type of wave has the most energy?
a low-frequency wave
a high-frequency wave
a wave length with Hertz
a wave with a magnetic field
What is the angle of incidence equal to when light is reflected?
an acute angle
the angle of reflection
the mode of interaction
the normal line
