The cards Question In a light diagram, what does a ray represent? Tap to flip Answer A straight line showing the direction in which a light wave travels. Question Are light rays physical parts that light is made of? Tap to flip Answer No. Rays are imaginary lines that show the direction light is travelling. Question What is the normal in a ray diagram? Tap to flip Answer An imaginary line drawn at 90° to a surface. Question What do wavefronts represent on a wave diagram? Tap to flip Answer The peaks of the wave. Question When light reflects, how does the angle of incidence compare with the angle of reflection? Tap to flip Answer They are equal. Question From which line are the angles of incidence and reflection measured? Tap to flip Answer From the normal. Question Light can be thought of as a wave in which two kinds of field? Tap to flip Answer Electric and magnetic fields. Question What is refraction? Tap to flip Answer A change in a wave's speed and direction as it passes from one transparent medium into another. Question What is the angle of refraction? Tap to flip Answer The angle between the refracted ray and the normal. Question When a wave slows down as it enters a new medium, which way does it turn? Tap to flip Answer Towards the normal, so the angle of refraction is smaller than the angle of incidence. Question When a wave speeds up as it enters a new medium, which way does it turn? Tap to flip Answer Away from the normal, so the angle of refraction is larger than the angle of incidence. Question What happens to the angle of refraction as the angle of incidence increases? Tap to flip Answer It increases too. Question At an air–glass boundary, how does the refraction of sound compare with that of light? Tap to flip Answer Sound refracts in the opposite direction to light, because its speed changes differently. Question What does the frequency of a wave tell you? Tap to flip Answer The number of oscillations that occur each second. Question In physics, what can be called radiation? Tap to flip Answer Anything given out by a system that transfers energy away from that system. Question Are electromagnetic waves transverse or longitudinal? Tap to flip Answer Transverse: they are oscillations in electric and magnetic fields. Question Which colour in the visible spectrum has the highest frequency? Tap to flip Answer Violet. Question Which is refracted more, violet light or red light? Tap to flip Answer Violet light. Question How do the speeds in air of electromagnetic waves of different frequencies compare? Tap to flip Answer They are all the same. Question Are radio waves, X-rays and visible light different kinds of phenomenon? Tap to flip Answer No. All are waves in electric and magnetic fields; they differ only in frequency and wavelength. Question Which electromagnetic waves have frequencies just below those of red light? Tap to flip Answer Infrared radiation. Question What happens when an electromagnetic wave is absorbed by a surface? Tap to flip Answer It transfers some or all of its energy to that surface. Question How does the intensity of black ink on a surface affect how easily it absorbs infrared? Tap to flip Answer The greater the intensity of black ink, the more easily the surface absorbs infrared. Question Is infrared radiation visible? Tap to flip Answer No. Infrared is not visible, unlike light. Question Which objects emit and absorb infrared radiation? Tap to flip Answer All objects, at all temperatures. Question In a set time, does a hotter object emit more or less infrared than a cooler one? Tap to flip Answer More. Question What determines the range of wavelengths an object emits, and their intensities? Tap to flip Answer The object's temperature. Question A surface that is a good absorber of infrared is also a good what? Tap to flip Answer A good emitter of infrared. Question Are shiny metal surfaces good or poor emitters of infrared? Tap to flip Answer Poor emitters (and poor absorbers). Question Is white paint a good or poor absorber and emitter of infrared? Tap to flip Answer Good. Question What happens to energy stores when an electromagnetic wave is emitted and then absorbed? Tap to flip Answer The emitter's store decreases and the absorber's store increases. Question What is ionisation? Tap to flip Answer An atom losing or gaining electrons so that it becomes charged (an ion). Question Which frequencies of electromagnetic wave cause ionisation? Tap to flip Answer Only ultraviolet, X-rays and gamma rays. Question How does the ionising ability of electromagnetic radiation change with frequency? Tap to flip Answer The higher the frequency, the more ionising it is. Question Ultraviolet lies between which two parts of the electromagnetic spectrum? Tap to flip Answer Visible light (lower frequency) and X-rays (higher frequency). Question Which electromagnetic waves have the highest frequency? Tap to flip Answer Gamma rays. Question Give one use of ultraviolet. Tap to flip Answer Lighting, or disinfecting water. Question Does a gamma-ray beam always transfer more power than other electromagnetic radiation? Tap to flip Answer No. Energy per packet depends on frequency, but a beam's power also depends on its intensity. Question Which electromagnetic waves are non-ionising? Tap to flip Answer Radio waves, microwaves, infrared and visible light. Question How can non-ionising radiation harm cells? Tap to flip Answer By heating them. Question Give one use of radio waves and microwaves. Tap to flip Answer Long-distance communication, broadcasting or data transmission. Question Why can microwaves cook food from the inside? Tap to flip Answer They are absorbed by water. Question Which part of food does infrared radiation cook? Tap to flip Answer The surface. Question Which two kinds of electromagnetic wave carry data in optical fibres? Tap to flip Answer Visible light and infrared. Question What is an antenna? Tap to flip Answer A metal structure designed to emit or absorb electromagnetic waves. Where this deck sits in the curriculum Curriculum National Curriculum for England Stage GCSE (Years 10–11) Course GCSE Physics Unit Electromagnetic waves Exam boards AQA, Edexcel, OCR Tiers foundation and higher England's National Curriculum sets what is taught; the units and their order are Oak National Academy's. Flash Feed is not affiliated with Oak or any exam board.
How this deck was checked On 2026-11-02, every card was compared with its source: the lessons of Oak National Academy, a public body funded by England's Department for Education that publishes lessons for the national curriculum. Because the cards come from those lessons, no second source was sought. The comparison was done automatically, not by a teacher, so a card can still be wrong. Flash Feed is not affiliated with any source named here.
Sources Total: 7 · primary: 7 · second publisher: 0
Show the other sources (5) Found a mistake? Write to support@flashfeed.app .
A Physics lesson by Oak National Academy licensed under Open Government Licence (OGL)
Flash Feed