2. LIGHT
Light moves in a straight line.
Light moves very fast.
3. LIGHT AND SHADOWS
When light cannot travel through an object , a
shadow is formed.
The shadow of an object is always formed on
the opposite side to the source of light.
4. THE RAINBOW
The rainbow is formed of 7 colours: red,
orange, yellow, green, blue, indigo and
violet.
The white is formed of 7
colours: red, orange, yellow,
green, blue, indigo and violet.
5. TRANSPARENT, TRANSLUCENT
AND OPAQUE
Transparent objects, like clear glass bottles,
allow light to pass through.
We can see objects that are behind them.
Translucent objects allow some light to
pass through, but we cannot see objects behind then
very
clearly.
Opaque objects, for examplewood and cardboard,
do not
allow light to pass through.
6. CONDUCTORS AND INSULATORS
Materials like iron, aluminium and glass
are conductors.
They get hot and cold quickly.
Materials like wood and plastic are
insulators.
They get hot and cold slowly.
