S2 Physics Module 1: Waves Flashcards
What are all sounds caused by?
A vibrating object
What happens to a wave’s appearance when the amplitude is increased?
Each wave becomes higher
What happens to a wave’s appearance when the wavelength is increased?
The distance between each wave becomes greater
What happens to a wave’s appearance if the frequency is increased?
There will be more waves
How does a sound change when the amplitude is increased?
It becomes louder
How does a sound change when the frequency is increased?
Its pitch becomes higher
What is the frequency range of human hearing?
20-20,000hz
What happens to light as it undergoes refraction?
Its speed changes as it travels from one optical medium to another
What is meant by the ‘normal’?
A line drawn at right angles to the boundary between the air and the 2nd optical medium. It is drawn at the point the ray of light first makes contact with the 2nd optical medium.
What is meant by the ‘angle of incidence’?
The angle measured between the ray and the normal as it enters another optical medium
What is meant by the ‘angle of refraction’?
The angle measured between the ray and the normal as it leaves the 2nd optical medium
What is meant by a converging lens?
