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Physics

Section 3 (Waves)

QuestionAnswer
What are longitudinal waves defined as? Waves with vibrations along the same direction as the wave transfers energy
What are transverse waves defined as? Waves with vibrations at 90 degrees to the direction the wave transfers energy
What is wavelength? The distance from one peak to the next
What is frequency? How many complete waves pass a certain point per second
What is amplitude? The height of the wave
What is the equation for wave speed? Wave speed = frequency x wavelength (v = f x (upside down y))
What is the period of a wave? The time it takes for one complete wave to pass a point
Waves transfer _______ and ___________ but not _________ energy, information, matter
Give two examples of transverse waves 1. Light waves 2. Ripples on water
Give two examples of longitudinal waves 1. Sound waves 2. Shock waves
Angle of incidence = ? Angle of reflection
EM waves generally travel _________ in denser substances slower
Sound waves travel ___________ in denser substances faster
What is a use of radio waves? Shortwave radio signals
What is a use/danger of microwaves Satellite communication/heat human body tissue
Name the 7 types of electromagnetic waves in order of increasing frequency Radio waves, microwaves, infrared, visible light, ultraviolet, x-rays, gamma rays
The higher the frequency EM radiation is typically the more ______________ radiation dangerous
What is a use/danger of infrared waves? Monitor temperature (night-vision equipment)/Skin burns
What is a use/danger of ultraviolet waves? Flourecsent lamps/Causes blindness
What is a use/danger of gamma rays? Sterilising medical equipment/Cell mutation, leading to cancer
What is a use/danger of x-rays? View internal structures/Cell mutations, leading to cancer
Created by: JoeMather
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