G4 T3 Waves and Information L3 March 29

G4 T3 Waves and Information L3 March 29

Objective: I can describe the properties of the light waves.

Do Now

1- when the frequency of the wave increases the wavelength(increase/decrease).

2- the height of wave represents (amplitude/wavelength/crest)

3- the lowest part of a wave is called_________

4- Define frequency

Chemicals on other planets!!!

Light waves

• Type of transverse wave

• Do not need a medium to travel through

• Traveling in rays

Rays

A line of energy that moves in one direction until it hits an object.

Properties of light waves

• Light can be reflected, refracted or absorbed.

• reflected:

• To bounce off an object

Refraction:

• To bend when passing through an object.

• Light can refract when they enter a new medium.

• The way the light refracts depends on the type of matter they passes through.

Prism refraction

• When the light passes through a prism it separates into different colors like those in the photo.

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