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Light Reflection & Refraction

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  • Wood is an example of which type of surface?
    Transparent
    Translucent
    Opaque
  • Derek the raver goes to a disco wearing white gloves, what colour do they look in green light? Why?
    Green, white gloves reflect green light
  • Name two sources of natural light.
    The sun, fire, stars, lightning, fireflies, glow-worms, bioluminescent animals
  • Fill in the blank. Objects in water appear ____________ and ___________ due to light refraction.
    Shallower and smaller.
  • Define light absorption.
    When light hits and object and stops because the light waves are absorbed by the object instead of reflected.
  • What are the three primary colours?
    Blue, Red, Yellow
  • Define light refraction.
    When light rays move from one medium to another and change direction or bend.
  • At which letter in the diagram would you find the light source?
    A
  • The rays spread out from a point is called __________ beam of light
    divergent
  • The ray of light that is going towards an object is called the... ?
    Incident ray
  • The rays come together at a point is called ________ beam of light.
    convergent
  • what is the main cause of refraction?
    change in the speed of light .
  • The light in this image is being... ?
    Refracted
  • What will happen if a ray of light hit a solid opaque object?
    It will form shadow
  • Which type of reflection does this image represent?
    Diffuse
  • What is the speed of light in air?
    300 000 000 m/s
  • How does light travel?
    In straight line
  • All rays move in the same direction is called _______ beam of light.
    parallel
  • How are light rays drawn?
    A straight line drawn with a ruler and arrow to indicate direction
  • At which letter would you find a refracted ray?
    F
  • Light will refract when it moves from one ________________ to another.
    Medium
  • At which letter would you find a reflected ray?
    E
  • Describe the path of light.
    Light source -> Reflection -> Eyes
  • Glass is an example of which type of surface?
    Translucent
    Opaque
    Transparent
  • Which type of reflection does this image represent?
    Specular
  • Name two sources of artificial light.
    Flashlight, lamp, street lamps, tv, phone, candles, fireworks, lasers, lighters, matches
  • What is the law of reflection?
    The law of reflection states that: angle of incidence i = angle of reflection r.
  • An object that is producing light is called a... ?
    Light source
  • When light hits an object but it does NOT get reflected to our eyes (meaning it doesn't bounce, it stops), the light is... ?
    Absorbed
  • How deep an object appears to be under water due to light refraction is called... ?
    Apparent depth
  • Light that has bounced off of a surface or an object has been... ?
    Reflected
  • The ray of light that is bounced off an object is called the... ?
    Reflected ray
  • What part of your eye acts like a lens for you to see objects?
    the cornea
  • Fill in the blank. "The moon is not a _____________________ because it can only ____________________ light.
    light source/reflect
  • Define light reflection.
    When light hits an object and bounces off the surface at the same angle that it hit the object.
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