Physics Waves AQA AS Exam Questions and Answers 100% Pass

Physics Waves AQA AS Exam Questions and Answers 100% Pass What does a wave do? - Answer- Transports energy from one place to another What are mechanical waves? - Answer- Mechanical waves use particles to transfer energy (neighboring particles bump into each other and set their neighbors moving) What are electromagnetic waves? - Answer- Electromagnetic waves don't use particle vibration to transfer their energy and can therefore travel through a vacuum. e.g. light What is the unit of frequency? - Answer- Hertz (Hz) What is the wave equation? - Answer- c = f x λ wavespeed = frequency x wavelength Longitudinal wave - Answer- Vibrations in a longitudinal wave are parallel to the direction in which the energy is traveling Eg. sound Transverse wave - Answer- Vibrations in a transverse wave are perpendicular (at right angles) to the direction in which the energy is traveling Eg. light. Define wavelength - Answer- The shortest distance between two particles that are oscillating in phase Period of a wave - Answer- The time taken for one complete oscillation of a particle in the wave Period Equation - Answer- f = 1/T Amplitude - Answer- Maximum displacement from the mean position Frequency - Answer- Number of oscillations per second