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Grade 4 Revision

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  • Identify how light travels that makes the boy to see the chair.
    The light from the bulb travels to the chair. The chair reflects the light to the boy's eyes.
  • Objects that make light bounce off are called...
    Reflectors
  • Which of the following is a light source?
    Sun
    Clouds
    Moon
  • Identify how light travels that makes the boy to see the cupcake.
    The light from the candle travels to the cupcake. The cupcake reflects the light to the boy's eyes.
  • Which is NOT a light source?
    Rocks
  • A band of light is called a ...
    Beam
  • What happens when light is bounced off from a surface, changing its direction.
    Reflect
  • Which is a Reflector?
    Medal
  • Which of the following is NOT a light source?
    Moon
    Stars
    Sun
  • Is this diagram correct? Why or Why not?
    No, the two angles are not the same.
  • Identify how light travels that makes the girl see the sun.
    The light from the sun travels to the girl's eyes.
  • Identify the ray.
    Incoming light ray
    Reflected ray
  • Objects that make their own light are called ...
    Light Sources
  • Identify the ray.
    Reflected ray
    Incoming light ray
  • A ray that hits a surface is called...
    Reflected ray
    Incoming light ray
  • Identify how light travels in a periscope that makes the boy see the bird above him.
    Sun - Bird - Mirror 1 - Mirror 2 - Boy's eyes
  • A ray that bounces off a surface is called...
    Reflected ray
    Incoming light ray
  • Name the instrument.
    Periscope