C5 waves/properties Flashcards
Give an example of a mechanical wave
Water waves
Are mechanical wave transverse or longitudinal
Both
Give an example of electromagnetic waves
X-Rays
Give an example of longitudinal waves
Sound
What is the equation for speed of waves
Speed of wave= wavelength x frequency
What is the normal
An imaginary line where the light hits the mirror
What does the law of reflection state
The angle of incidence is the same as the angle of reflection
What is a real image
A real thing that’s there
What is a virtual image
The reflected image that isn’t actually there
Why does the light split up into different colours when it passed through a triangular prism
It changes direction
What is diffraction
It is the spread out of waves when they pass through a gap or round the edge of an obstacle
Why might people living in hilly areas have poor radio reception
The hills get in the way of the radio wave so there’s no line of sight
What does the pitch of a note depend on
The frequency
What does the loudness of a note depend on
The amplitude
What do we use waves for
Communication
