Sources of Light
Natural or Artificial?
lamp
Artificial
How does light help us see objects?
Light bounces off objects and enters our eyes.
True or False:
Shadows are caused because light travels in a straight line.
True! Light won't bend around objects. Objects stop the light and create a shadow.
How does a mirror affect the path of light?
It makes the light reflect (bounce) back.
photon
light particle
Natural or Artificial?
candle
Artificial
When light travels from a source, it moves in which direction?
a straight line
True or False:
Shadows are always the same size.
False! It depends on the location of the light source.
How does a prism affect the path of light?
It bends the light.
reflection
when light bounces off a surface
Natural or Artificial?
stars
Natural
What happens to light when it bounces off a surface?
It bends and changes direction.
True or False:
Shadows are always the same shape.
False! It depends on the objects and the light source.
How does a water affect the path of light?
It slows down the light.
transparent
objects that allow light to pass through so you can see them
Natural or Artificial?
moon
Trick question!
The moon is NOT a source of light. It only reflects sunlight.
What is refraction?
When light bends as it travels from one material to another?
True or False:
Shadows are always colourful!
False. They're always dark
What do you see when light passes through a prism?
only the colours of the rainbow
translucent
objects allow some light to pass through. It may be blurry and hard to see
What is the main source of natural light during the daytime?
the sun
What is dispersion?
When light splits into colours, a rainbow.
True or False:
Shadows can move on their own.
False! Shadows move only when the object or light source moves.
What happens when the path of light is blocked completely?
It creates a shadow.
opaque
Objects do not let any light through. You cannot see through them.