WHAT IS LIGHT
Transparent
A material that allows light to pass through it Example: window
Translucent
A material that allows some light to pass through it Example: tissue paper
Opaque
A material that does not allow light to pass through it Example: desk
How does light travel?
Light energy travels as waves in straight lines away from the source of light
What are some sources of light?
Some sources of light are sun, light bulb, fire and firefly
What happens when light strikes a bumpy surface?
The light waves bounce back in many directions and angles. This causes you to see that object rather than your reflection.
What happens when light strikes a smooth and shiny surface?
The light waves bounce directly back to your eyes at an angle causing you to see the reflection.
What does reflect mean?
To bounce off a surface
Matter
What an object is made of. All objects are made of matter
How are we able to see objects?
When light hits an object, it bounces off that object and to our eyes
Light
a form of energy that we can see
Light waves travel in all
directions
Light can travel through
empty space
Light bounces off
objects and reaches our eye
A firefly
produces its own light
Light travels in
straight lines.
Our greatest source of light is the
sun
Reflect
to bounce off a surface
