Appears to - When it looks as though something has caused an action but in fact it was caused by something else., Blocked - Stopped continuing on its way., Evidence - Information gained from an experiment or investigation., Light source - A place where light comes from, for example a torch., Mirror - A very smooth, shiny, surface that reflects light well., Object - The thing that is reflected., Opaque - Does not allow light to pass through., Ray - A line that light travels in., Shadow - Forms when light is blocked by some types of solid object., Silhouette - The shadow that forms when you hold an opaque object between a light source and screen., Translucent - Allows some light to pass through., Transparent - Allows all the light to pass through., Beam - A band that light travels in., Conclusion - The decision you come to when you have all the evidence., Light intensity - The amount of light in an area.,

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