4. Light and shadows
• The shadow of an objet is always formed on
the opposite side to the source of light.
5. Colours
colours mixtures
• The light we get from the • When we mixture yellow &
blue, we get: green.
sun is called white light.
• White light is a mixture of When we mixture red &
seven colours: blue we get : purple.
red,orange,yellow,green,
When we mixture
• Blue,indigo, and violet. red & yellow we get: orange.
and yellow. THESE
THE PRIMARY COLOURS.
6.
7. • Transparent
Bodies and light.
1. Transparent, translucent and
opaque objets.
. Transparent objets, like clear
glass bottles, allow light to pass
through .
. Translucent objets, allow some
light to pass through like,
curtains
• Translucent
. Opaque objets, for example
wood and cardboard do not allow
light to pass trhough.
• Opaque
8. 2.Luminous and non luminous bodies.
• Natural luminous bodies like the ,
produce light.
• Artificial luminous bodies, like &
are man made.
Non luminous bodies produce no light.
9. heat
• 1. heat goes from one body to another. Heat
goes from one body to another. Heat goes
from hot bodies to colder bodies.
• 2. conductors and insulator. Materials like
iron , aluminium and glass are conductors.
They get hot quickly.
• Materials like wood and plastic are insulators.
They get hot slowly.
10. test
• Light moves in a straight line.
• light moves very slow.
• the shadow of an objet is always formed on the
opposite side to the source of light.
• White light is a mixture of four colours
• when we mix red and yellow ge get orange
• transparent objets do not allow light
• Materials like iron aluminium and glass are
insulators. They get hot quickly.
11. solutions
• 1 . Yes , CONGRATULATIONS
• 2 . No , fast
• 3 . Yes , CONGRATULATIONS
• 4 . No , seven
• 5 . Yes , CONGRATULATIONS
• 6 . No , allow light
• 7 . No , conductors
