physics 1 0.0 / 5 ? Physicsall topics coveredGCSEOCR Created by: Aurora HCreated on: 19-05-16 19:13 what is heat ? a form of energy and is measured in joules 1 of 30 what is temperature ? shows how hot or cold an object in measured in celcius 2 of 30 what is a thermogram ? to show how hot an object is throught coulours ? 3 of 30 what is specific heat capacity ? the amount of energy which is needed to raise the temp of 1 kg of material 4 of 30 what is specific latent heat ? The amount of energy needed to change the state 1 kg of material 5 of 30 what are changes of state ? the amount of energy to change a solid to a liquid to a gas 6 of 30 what are thermal conductors ? a metel which can conduct head very well 7 of 30 what is conduction ? Energy is transferred throught solid material 8 of 30 what are thermal conducters ? matererials which dont conduct heat very well 9 of 30 what is convection ? when moving particles carry energy from one place to another 10 of 30 what is infrared radiation ? this is energy is being transfered by radiation 11 of 30 what is pay-back time ? the amount of time it takes to recover the money spent 12 of 30 what is a sankey diagram ? to show the energy transferred made by a application 13 of 30 what is applitude ? maximum height of the wave measured fromthe middle 14 of 30 what is wavelength ? short distance between one point and the same point on the next wave 15 of 30 what is the electromagnetic spectrum ? radio wave , microwaves , infrared , visible , ultraviolet , x rays and then gamma rays 16 of 30 what are optical fibres ? very fine glass cables which are used to transmit data 17 of 30 what are the uses of optical fibres ? endiscopes , lights and for transmitting lots of data (a multiplex ) 18 of 30 what are lasers used for ? surgery , dental , dvd and cutting materials 19 of 30 what is the wavelength of a microwave ? long wavelegth 20 of 30 what type of wave does a mobile phone use ? microwaves for communication 21 of 30 what are the advantages of didgital radios more stations , less chance of interferace 22 of 30 what are the disadvantage of DAB ? areas of the UK covered , not as good as FM 23 of 30 what use wireless communication ? televisions , mobile phone , laptops and smart phones 24 of 30 what do radio waves refect off ? the ionisphere 25 of 30 what can p-waves do ? travel throught the solid and liquid parts of the earth 26 of 30 what can s-waves do ? they can pass throught solid parts of the earth 27 of 30 what are SPF's ? sun protection factor 28 of 30 what type off communication with light ? morse code 29 of 30 how do microwaves cook food ? by penertrating 1 cm into the food and cooks the water molecules 30 of 30
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