Monday 4/29 Check In

Open Ended

How was your weekend? Share what you did and what your goals are for this week--either personal, school-related or BOTH. Complete answers will receive PBIS points.

1) Stand Up and mix!
2) High five a partner when music STOPS.
3) 5 random rounds

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​Stand Up;
Hands Up; Pair Up (SUHUPU)

Answer the following questions about yourself. If finished early ask a follow-up question.
1) Name?
2) Share what you did this weekend

Light Waves
Reflection, Polarization, Colors

Luminous Objects

Generate their own light

Illuminated Objects

objects that are capable of reflecting light

Law of Reflection

• Incident ray= INcoming light

• Reflected ray: OUTgoing light

• Incident = Reflected

• Normal: 90 degrees to the mirror

Labelling

Label Reflection Diagram here

Drag labels to their correct position on the image

Normal Line

Reflected Line

Incident Light

Mirror

Multiple Choice

How does light travel?

• It curves around corners
• Really slow
• In a straight line
• In circles

Multiple Choice

Which letter is an example of reflection?

• A

• B

• C

The WAVELENGTH of light is associated to its COLOR.

Red light has a LONGER wavelength and violet has a SHORTER wavelength.

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Visible Light in the EM spectrum

White is not actually a specific color - it is made of ALL colors mixed together

Looking through a prism or white film breaks white light into its 7 component colors

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What is white light?

Labelling

Label parts of white light and its 7 components

Drag labels to their correct position on the image

White light

Prism/Film

Red Light/Slow

Violet Light/Fast

Multiple Choice

Why does white light separate into different colors as it passes through a prism?

• Different colored light has different wavelengths.

• The side part of a prism only let certain colors of light pass through.

Multiple Choice

Red is the least bent among the seven colors because it has the ___________.

• slowest frequency

• fastest frequency

When light hits a surface it can be:

• REFLECTED - energy of the wave bounces off the material

• ABSORBED - energy of wave is transferred into the material

The color you see comes from the REFLECTED wavelengths of light.

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Why are objects a certain color?

Why are objects a certain color?

​Color Observed	Reflected wavelengths​	​Absorbed wavelengths
​Red	​Red	​All others (OYGBIV)
​White	​All (ROYGBIV)	​NONE
​Black	​NONE	​All (ROYGBIV)

​Fill in the table in your notes.

Labelling

Drag and drop correct color(s) into each box

Drag labels to their correct position on the image

No colors reflected

All colors reflected

No colors absorbed

Red only

All colors absorbed

All colors, except Red

Multiple Choice

Why does a shirt appear black?

• It absorbs all light wavelengths of light.

• It refracts all light wavelengths of light.

• It reflects all light wavelengths of light.

• It emits all light wavelengths of light.

Multiple Choice

Why does a shirt appear white?

• It absorbs all light wavelengths of light.

• It refracts all light wavelengths of light.

• It reflects all light wavelengths of light.

• It emits all light wavelengths of light.

Multiple Choice

What is happening to the red light?

• reflected

• absorbed

• refracted

Multiple Choice

What is happening to every color but red?

• reflected

• absorbed

• refracted

Light waves has many directions.

Polarized filters only allow the light through that is vibrating in a SPECIFIC direction.

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Polarization of Light

Labelling

Label polarized vs unpolarized light

Drag labels to their correct position on the image

Un-polarized light

Polarized Light

What happens when BOTH directions are blocked?

​Both directions BLOCKED = NO light

Multiple Choice

If a tinted film is placed in a beam of nonpolarized light, only the components of the waves in the .......................direction as the polarizing axis can pass through .

• same

• different

• perpendicular

Labelling

Label 3 behaviors of Light Waves

Drag labels to their correct position on the image

Colors of Light

Reflection

Polarization

Poll

Do you understand Reflection, Polarization, and Colors of Light Waves?