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