Topic 1-waves Flashcards
(20 cards)
What is the definition of frequency and it’s equation?
The number of waves to pass a point in one second, measured in heartz, Hz
Equation: f=N/t
What is the definition of wavespeed and it’s equation?
The distance travelled by a wave in one second, measured in metres per second, ms-1.
Equation: v=d/t
What is the definition of amplitude?
The height of the wave from the centre position, measured in metres, m.
What is the definition of wavelength?
The distance between two similar points on a wave, measured in metres, m.
What is the definition of period and it’s equation?
The time for one wave to pass a point, measured in seconds, s
Equation: T=1/f
What has a larger amplitude: loud notes or quiet notes?
Loud notes have a larger amplitude because they have more energy than quiet notes.
What has a higher frequency: high pitches notes or low pitched notes?
High pitched notes have a higher frequency because they produce more waves per second than low pitched notes.
What is the definition of diffraction?
Diffraction is the bending of a wave around an object. All waves diffract.
What diffracts more: longer wavelengths or shorter wavelengths?
Longer wavelengths diffract more than short wavelengths.
What is the definition of refraction?
Refraction is the bending of light as it passes from one material to another.
What happens when light passes from air to glass?
It bends towards the normal.
What happens to light when it passes from glass to air?
It bends away from the normal.
What are all the waves of the EM spectrum in order?
Radio, microwaves, infrared, visible light, ultraviolet, x-rays and gamma rays.
What is a detector of radio waves?
Aerial
What is a detector of microwaves?
Aerial
Why is a detector of infrared
Photodiode
What is a detector of visible light?
Eye
What is a detector of ultraviolet?
Photographic film
What is a detector of x-rays?
Photographic film
What is a detector of gamma rays?
Photographic film
