Physics P1 6.1 The electromagnetic spectrum. 2.0 / 5 based on 1 rating ? PhysicsElectromagnetic SpectrumGCSEAQA Created by: Atlanta and JacobCreated on: 18-07-16 18:25 In order of increasing wavelength, what is the electromagnetic spectrum? Gamma rays, x-rays, ultraviolet, visible, infrared, microwaves, radio waves. 1 of 24 What can be used to calculate the frequency or wavelength of electromagnetic waves? v = f x (strange symbol - look it up). 2 of 24 What do electromagnetic waves do? Transfer energy. 3 of 24 What are electromagnetic radiations? Electric and magnetic disturbances. 4 of 24 How do electromagnetic radiations travel? As waves and move energy from place to place. 5 of 24 Can electromagnetic waves travel through space (a vacuum)? They all travel through space at the same speed but they have different wavelengths and frequencies. 6 of 24 What are all the waves collectively called? The electromagnetic spectrum. 7 of 24 How do we group waves? According to their wavelength and frequency. 8 of 24 What waves have the shortest wavelength and highest frequency? Gamma rays. 9 of 24 What waves have the longest wavelength and lowest frequency? Radiowaves. 10 of 24 What are the wavelengths of radio waves? Radio waves can have wavelengths of more than 10000 metres. 11 of 24 Why are the wavelengths and frequencies at the boundaries of the spectrum approximate? The spectrum is continuous therefore the different parts of the spectrum are not precisely defined. 12 of 24 What happens to different wavelengths of electromagnetic radiation? Different wavelengths of electromagnetic radiation are reflected, absorbed or transmitted differently by different substances and types of surface. 13 of 24 The higher the frequency of an electromagnetic wave the more...? Energy it transfers. 14 of 24 What do all electromagnetic waves travel through and at what rate? Space at a wave speed of 300 million m/s. 15 of 24 What can we link the speed of electromagnetic waves to? Their wavelength and frequency using the equation v=fx(strange symbol - look it up) 16 of 24 In the equation to calculate the frequency or wavelength of electromagnetic waves, what is the v? The wave speed = 300 000 000m/s 17 of 24 In the equation to calculate the frequency or wavelength of electromagnetic waves, what is f? The frequency in hertz, Hz. 18 of 24 In the equation to calculate the frequency or wavelength of electromagnetic waves, what is the strange symbol (that needs to be looked up)? The wavelength in metres, m. 19 of 24 What do electromagnetic waves transfer? Energy NOT matter. 20 of 24 What is the unit of frequency? Hertz, Hz. 21 of 24 Which part of the electromagnetic spectrum transfers the most energy? Gamma rays. 22 of 24 **YOU NEED TO KNOW HOW TO PUT THE DIFFERENT PARTS OF THE SPECTRUM IN THE CORRECT ORDER** **YOU MAY BE ASKED IN AN EXAM FOR THE ORDER IN EITHER DECREASING OR INCREASING WAVELENGTH, FREQUENCY OR ENERGY SO BE AWARE AND DONT BE TRICKED** 23 of 24 **LOOK UP DIAGRAMS OF THE ELECTROMAGNETIC SPECTRUM** ** 24 of 24
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