Light DVD

What is light?

What is light?

A form of energy we can see.

What is a medium?

(Give an example)

What is a medium? (Give an example).

The material that light moves through is called a medium. Examples: air and water.

What is the electromagnetic

spectrum?

What is the electromagnetic spectrum?

A family of radiation waves. Spectrum

means range

In what direction do light waves

travel?

In what direction do light waves travel?

In one direction and in a straight

line.

What happens to light energy that is

absorbed?

What happens to light energy that is absorbed?

It is changed into heat energy.

What happens when light energy

is reflected?

What happens when light energy is reflected?

It bounces back off the new medium

(object).

What is the name of particles

that EVERYTHING is

made of?

What is the name of particles that EVERYTHING is made of?

Atoms

What happens to light when it strikes an opaque medium?

What happens to light when it strikes an opaque medium?

It is blocked and does not pass

through it.

What happens to light when it strikes a

transparent medium?

What happens to light when it strikes a transparent medium?

It is NOT blocked and passes through

the medium.

What do you call something that lets some light through, but blocks some of

the light too?

What do you call something that lets some light through, but blocks some of the light too?

Translucent

What is refraction?

What is refraction?

The bending of light rays as they enter a

new medium. Airwater

What colors make up the visible light spectrum?

What colors make up the visible light spectrum?

ROY G BIV - red, orange, yellow,

green, blue, indigo, violet.

How do we see color?

How do we see color?

When white light hits something, the light rays that

are the same color as the object are reflected and all

the other colors are absorbed.