Game Preview

Grade 4 Revision

  •  English    18     Public
    How we see things
  •   Study   Slideshow
  • Which of the following is a light source?
    Sun
    Clouds
    Moon
  •  15
  • Which of the following is NOT a light source?
    Stars
    Moon
    Sun
  •  15
  • A band of light is called a ...
    Beam
  •  15
  • Objects that make their own light are called ...
    Light Sources
  •  15
  • Objects that make light bounce off are called...
    Reflectors
  •  15
  • Name the instrument.
    Periscope
  •  15
  • A ray that hits a surface is called...
    Reflected ray
    Incoming light ray
  •  15
  • A ray that bounces off a surface is called...
    Incoming light ray
    Reflected ray
  •  15
  • What happens when light is bounced off from a surface, changing its direction.
    Reflect
  •  15
  • Identify the ray.
    Reflected ray
    Incoming light ray
  •  15
  • Identify the ray.
    Incoming light ray
    Reflected ray
  •  15
  • Identify how light travels that makes the girl see the sun.
    The light from the sun travels to the girl's eyes.
  •  20
  • 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.
  •  20
  • 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.
  •  20
  • 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
  •  20
  • Is this diagram correct? Why or Why not?
    No, the two angles are not the same.
  •  20