FACTS ABOUT LIGHT
1
Light is an electromagnetic
wave that is visible to human eye.
2
The major source of Earth's
light is the Sun.
3
It takes about 8 minutes
for the Sun's rays to reach the
surface of the Earth.
4
The speed of light is
299 792 458 m/s.
Light travels as waves in a straight
line unless an object obstructs it.
1
It REFLECTS when it
hit a smooth and shiny
object like mirrors.
2
It cannot pass through opaque
objects. Opaque objects
ABSORB light and transform it
into heat energy.
3
It bends or REFRACTS
when passing through
another medium.
Light changes its speed
and direction as it travels
from one medium to another.
Light travels
faster in less
dense mediums
like air.
It travels slower
in more dense
mediums like
glass or water.