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Light is a form of energy that
our eyes can detect. It comes in
all the colours of the rainbow,
but when the colours are
mixed together, light is white.
Light
Casting shadows
Light can only travel
in straight lines. If
something blocks its
path, it casts a shadow
– a dark area that the
light cannot reach.
Fireflies
Some animals create their own
light. Fireflies have tails that
flash a yellowish-green colour
at night to attract mates.
What’s the fastest thing in the Universe?
Science and technology
Where does light
come from?
Light comes from inside
atoms. When an atom
needs to lose energy, it
spits out the energy as
a particle of light.
The light of a flame is caused by
a chemical reaction that releases
energy stored in the burning wax.
Telescopes
magnify the
light from distant stars and
planets so we can see them.
Mirrors
reflect light so
we can see images of
ourselves.
Periscopes
bend light
so we can see around
corners.
Torches
shine a beam
of light to help us see
in the dark.
Cameras
capture light in
a split second to create
photographs.
CDs and DVDs
store
digital information that
can be read by laser beam.
Using light
We can use light for
many different things.
