pyhsics 0.0 / 5 ? PhysicshomeworkNational 5Other Created by: henriettasacksCreated on: 01-06-14 12:35 Dependant Variable what you are going to measure 1 of 33 independant Variable the thing you are going to change 2 of 33 accuracy how close your answer is to the actual answer 3 of 33 convection the way in which heat is transfered through liquids and gases. heat travels from a hot region to a hold region. 4 of 33 conduction the way in the which heat is transferred through solids. the hotter the object is the more the particles vibrate. 5 of 33 radiation the process of emmiting waves. black surfaces are good at absorbing and emitting heat. 6 of 33 thermal insulators. thermal insulators are things that prevent heat from moving from one place to another. 7 of 33 infrared radiation the way that heat energy is transferred from a hotter to a colder place. 8 of 33 thermal imaging camera this detects how much infrared radiation is being given out by warm objects. 9 of 33 sankey diagram a scale diagram that shows all the energy transfers taking place in a process. 10 of 33 wasted energy where energy is transferred into unuseful forms 11 of 33 luminous a luminous object gives of light. 12 of 33 give three examples of luminous light the sun, the moon and a torch 13 of 33 non luminous objects that do not give of light but we can see them because of lminous light sources. 14 of 33 what does a opaque object do when light hit it? opaque objects block light and they then form a shadow. 15 of 33 opaque objects which absorb scatter or reflect light and do not allow any light pass through 16 of 33 translucent objects that transmit light but diffuse the light that passes through 17 of 33 normal the imaginary line sy right angles to a surface where a light ray strikes it 18 of 33 reflection the hange in direction of a light ray after it hits a surface and bounces off. 19 of 33 laterally inverted when an image is reversed on a plane mirror meaning right becomes light and left becomes right. 20 of 33 refraction the change in direction of a light ray. 21 of 33 wavelength the distance between two individual points on the wave 22 of 33 critical angle the smallest angle of incidence at which total internal reflection occurs. 23 of 33 total internal reflection it is when all the light is reflected and the both angles are equal. this occurs in optical fibres. 24 of 33 primary colour colours that cannot be created through the mixing of colours 25 of 33 secondary colour they are colours that can be obtained by mixing from primary colours. 26 of 33 retina the layer of light-sensetive cells found at the back of your retina 27 of 33 rods the retina has lots of light sensitive cells (rods and cones) rods are mainly aroung the edge of the retina and are sensitive to dim light 28 of 33 optical nerve a paired sensory nerve that runs from each eye to the brain 29 of 33 heat energy- how much heat energy do you need depending on somethings size? the amount of heat energy need to heat something depends on how much stuff is being heated aswell as the temperature you want it to be. 30 of 33 what is hot air rising called? covection 31 of 33 what does a toaster use? radiation 32 of 33 what is heat energy? particles rubbing/vibrating together causing friction 33 of 33
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