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What is refraction?
when light bends as it passes through a different medium.
What are opaque objects?
objects that do not let light pass through.
What are translucent objects?
objects that let some light pass through.
What are transparent objects?
objects that let all light pass through.
Why does a transparent object form no shadow?
it lets all the light through.
What causes the phases of the moon?
the moon’s position relative to Earth and the Sun.
What is the position of the moon during a new moon?
when the moon is between Earth and the Sun.
What does waxing mean?
the moon is getting bigger.
What does waning mean?
the moon is getting smaller.
What causes a lunar eclipse?
Earth blocks sunlight from reaching the moon.
Why does the moon appear red during a lunar eclipse?
Earth's atmosphere bends red light toward it.
What is regular reflection?
when light reflects evenly off a smooth surface.
What is irregular reflection?
when light scatters in many directions from a rough surface.
What kind of reflection happens with a mirror?
regular reflection.
What kind of reflection happens on a rough wall?
irregular reflection.
What do we call the imaginary line drawn perpendicular to a reflective surface?
the normal
the refracted ray
the reflected ray
the incident ray
