Introduction to light aimed at Year 9 level. Includes basics of reflection and refraction and the structure of the eye.
Terms : Hide Images
| 534883067 | Luminous | Emits own light eg: light globe, sun | 0 | |
| 534883068 | Non-luminous | Does not emit own light eg. moon, person | 1 | |
| 534883069 | Straight line | How does light travel? | 2 | |
| 534883070 | Reflect | To see an object it must be luminous or ____________ light | 3 | |
| 534883071 | Luminous | To see an object it must reflect light or be ______________ | 4 | |
| 534883072 | Transparent | All light passes through; can see through clearly eg. glass | 5 | |
| 534883073 | Translucent | Some light passes through; can see through but not clearly eg. plastic bag | 6 | |
| 534883074 | Opaque | No light passes through; cannot see through at all eg. desk | 7 | |
| 534883075 | Reflection | Light bounces off the surface and travels up to your eyes. | 8 | |
| 534883076 | Regular | Type of reflection when light bounces off a smooth surface; produces a clear image | 9 | |
| 534883077 | Regular | Type of reflection |  | 10 |
| 534883078 | Diffuse | Type of reflection when the light bounces off a rough surface; produces a distorted image | 11 | |
| 534883079 | Diffuse | Type of reflection |  | 12 |
| 534883080 | Normal | A line drawn at right angles to the reflecting surface at the point where the incidence ray hits; All angles are measured from here | 13 | |
| 534883081 | Normal |  | 14 | |
| 534883082 | Incidence | Which angle is this? |  | 15 |
| 534883083 | Reflection | Which angle is this? |  | 16 |
| 534883084 | Equal | Law of Reflection: Angle of incidence is LESS/EQUAL/GREATER than the Angle of reflection | 17 | |
| 534883085 | Reflection | An image in a mirror is found by following the rays of INCIDENCE/REFLECTION | 18 | |
| 534883086 | Equal | An image appears behind the mirror at a LESS/EQUAL/GREATER distance than the object is in front of the mirror | 19 | |
| 534883087 | Image | This is formed when you look into a mirror and your eyes detect the light that has been reflected and the brain assumes that the light has travelled in straight lines. | 20 | |
| 534883088 | Reflection | To locate the position of the image, trace the light rays of INCIDENCE/REFLECTION |  | 21 |
| 534883089 | Magnified | If an image appears bigger than the object | 22 | |
| 534883090 | Diminished | If an image appears smaller than the object | 23 | |
| 534883091 | Distorted | When an image appears altered in shape | 24 | |
| 534883092 | Laterally inverted | When an image appears the wrong way round | 25 | |
| 534883093 | Upright | When an image appears the right way | 26 | |
| 534883094 | Inverted | When an image appears upside down | 27 | |
| 534883095 | Real | When an image can be projected onto a screen | 28 | |
| 534883096 | Virtual | When an image cannot be projected onto a screen | 29 | |
| 534883097 | Convex | A mirror whose rays will be reflected and diverge away from each other | 30 | |
| 534883098 | Convex | Type of mirror in which an upright, diminished and virtual image is produced | 31 | |
| 534883099 | Convex | Type of mirror? |  | 32 |
| 534883100 | Convex | Type of mirror? |  | 33 |
| 534883101 | Concave | A mirror whose rays will be reflected and converge to a focus | 34 | |
| 534883102 | Concave | Type of mirror in which an upright, magnified and virtual image is produced | 35 | |
| 534883103 | Concave | Type of Mirror? |  | 36 |
| 534883104 | Concave | Type of mirror in which an inverted, diminished and real image is produced | 37 | |
| 534883105 | Concave | Type of mirror? |  | 38 |
| 534883106 | Refraction | The bending of light as it moves though different mediums |  | 39 |
| 534883107 | Towards | When light enters a more dense material it bends AWAY/TOWARDS the normal | 40 | |
| 534883108 | Away | When light enters a less dense material it bends AWAY/TOWARDS the normal | 41 | |
| 534883109 | Refraction | Which angle is this? |  | 42 |
| 534883110 | Dispersion | When white light is passed through a glass prism it splits into its constituent colours | 43 | |
| 534883111 | Dispersion |  | 44 | |
| 534883112 | White | The colour of light when it is made up of all the colours of its spectrum | 45 | |
| 534883113 | Reflects | An object appears a colour because it ASBORBS/REFLECTS that colour light | 46 | |
| 534883114 | Red | An object is seen as red when it reflects this colour | 47 | |
| 534883115 | ROYGBIV | The first letters of the colours which make up the light spectrum | 48 | |
| 534883116 | Green | if an object absorbs Red, Orange, Violet and some Yellow and Blue light, it would be this colour. | 49 | |
| 534883117 | White | An object will appear this colour if it reflects all colours of light | 50 | |
| 534883118 | Black | An object will appear this colour if it absorbs all colours of light | 51 | |
| 534883119 | White | The three primary colours of light are red, green and blue can be mixed together to make this colour light | 52 | |
| 534883120 | Magenta | Tthis secondary colour is produced by mixing red and blue light | 53 | |
| 534883121 | Yellow | This secondary colour is produced by mixing red and green light | 54 | |
| 534883122 | Cyan | This secondary colour is produced by mixing green and blue light | 55 | |
| 534883124 | Iris | The ring of muscle that controls the amount of light entering the eye. | 56 | |
| 534883125 | Iris |  | 57 | |
| 534883126 | Contracts | In a dark room the iris CONTRACTS/RELAXES to let as much light in as possible | 58 | |
| 534883127 | Cornea | Clear, transparent surface where most of the bending (refraction) occurs. | 59 | |
| 534883128 | Cornea |  | 60 | |
| 534883129 | Lens | Fine focus of light | 61 | |
| 534883130 | Lens |  | 62 | |
| 534883131 | Pupil | A hole in the iris through which light passes | 63 | |
| 534883132 | Pupil |  | 64 | |
| 534883133 | Aqueous humour | Clear, watery liquid behind the cornea | 65 | |
| 534883134 | Aqueous humour |  | 66 | |
| 534883135 | Ciliary muscle | Adjusts the shape of the lens, depending on how far away the object we are trying to focus on is. | 67 | |
| 534883136 | Ciliary muscle |  | 68 | |
| 534883137 | Vitreous humour | Jelly like substance filling the back part of the eye | 69 | |
| 534883138 | Vitreous humour |  | 70 | |
| 534883139 | Retina | Lined with millions of cells that are sensitive to light. These cells respond to light by sending signals to your brain | 71 | |
| 534883140 | Retina |  | 72 | |
| 1034996900 | Rods | Light receptor cells that detect the brightness of light | 73 | |
| 1034996901 | Cones | Light receptor cells that detect colour | 74 | |
| 534883141 | Optic nerve | Sends signals to your brain from the retina | 75 | |
| 534883142 | Optic nerve |  | 76 | |
| 534883143 | Blind spot | The point on the retina where the optic nerve is attached. There are no sensory cells here so no light is detected. | 77 | |
| 534883144 | Blind spot |  | 78 | |
| 534883145 | Biconcave | Lens which are thin at the centre |  | 79 |
| 534883146 | Biconcave | Lens which forms an upright, diminished and virtual image virtual | 80 | |
| 534883147 | Biconvex | Lens which bulges out at the centre |  | 81 |
| 534883148 | Biconvex | Lens which forms an inverted, diminished and real image | 82 | |
| 534883149 | Biconvex | Lens which forms an upright, magnified and virtual image | 83 |
