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Edexcel GCSE Physics Topic 5 - Light And The Electromagnetic Spectrum

Below is everything the examiners think you know, if you're not sure of something click on the link to watch my YouTube video explanation. For a copy of these you can print off, get the FREE revision guide I wrote for you.

• I can construct ray diagrams to show what happens to a wave when it is reflected - Physics only

• I can construct ray diagrams to show what happens to a wave when it is refracted

• I can construct ray diagrams to show what happens to a wave when it is total internally reflected - Physics only

• I can explain the law of reflection the critical angle - Physics only

• I can explain diffuse and specular reflection - Physics only

• I can describe the circumstances in which a diverging lens should be used - Physics only

• I can construct a ray diagram for a diverging lens - Physics only

• I can describe the image formed by a diverging lens - Physics only

• I can describe how lens power can relate to shape and focal length - Physics only

• I can recall the order of the electromagnetic waves

• I can recall that electromagnetic waves are transverse and form a continue spectrum

• I can recall uses, dangers and properties of each part of the spectrum

• I can recall the order of light in the visible spectrum

• I can describe that objects absorb and transmit light of different wavelengths - Higher tier only

• I can explain that the intensity and wavelength distribution depends on the temperature of the object - Physics only

• I can explain anybody is constantly absorbing and emitting radiation, and the balanced between the two determines the temperature - Physics only

• I can explain how radiation affects the temperature of the Earth - Physics only

• I can explain how an alternating current may produce radio waves - Higher tier only

• I can recall the absorption or emission of radiation can cause change to an atom