Study

Chapter 9, part 1

  •   0%
  •  0     0     0

      Back   Restart
  • What are opaque objects?
    objects that do not let light pass through.
  • What is the ray model of light?
    a model that shows light travels in straight lines.
  • What is irregular reflection?
    when light scatters in many directions from a rough surface.
  • What does waxing mean?
    the moon is getting bigger.
  • What are translucent objects?
    objects that let some light pass through.
  • What is the position of the moon during a new moon?
    when the moon is between Earth and the Sun.
  • What is the angle of reflection?
    the angle between the reflected ray and the normal.
  • Why does the moon appear red during a lunar eclipse?
    Earth's atmosphere bends red light toward it.
  • What is refraction?
    when light bends as it passes through a different medium.
  • What causes the phases of the moon?
    the moon’s position relative to Earth and the Sun.
  • What kind of reflection happens with a mirror?
    regular reflection.
  • What is regular reflection?
    when light reflects evenly off a smooth surface.
  • What is the normal?
    an imaginary line perpendicular to a surface.
  • What does waning mean?
    the moon is getting smaller.
  • What is reflection?
    when light bounces off a surface.
  • What is the angle of incidence?
    the angle between the incoming ray and the normal.
  • What kind of reflection happens on a rough wall?
    irregular reflection.
  • Why does a transparent object form no shadow?
    it lets all the light through.
  • Why do images in a mirror appear flipped?
    because of lateral inversion.
  • What are transparent objects?
    objects that let all light pass through.
  • What does the ray model help us predict?
    how light behaves when it hits objects.
  • What is is the position of the moon during a full moon?
    when Earth is between the moon and the Sun.
  • Why does an opaque object form a shadow?
    it blocks all the light.
  • Why does a translucent object form a dim shadow?
    it lets only some light through.
  • What causes a lunar eclipse?
    Earth blocks sunlight from reaching the moon.
  • What is the law of reflection?
    the angle of incidence equals the angle of reflection.
  • Why does a tree cast a shadow?
    the tree blocks light that travels in a straight line.
    • Your experience on this site will be improved by allowing cookies.