BellworkBellworkClear everything from desk except:Clear everything from desk except:o P / PP / Po Vocab. NotebooksVocab. Notebooks

Label the next entry “Light Label the next entry “Light Vocabulary”Vocabulary”

Go to the page that you will be Go to the page that you will be taping your vocabulary sheet to taping your vocabulary sheet to and write down as many sources of and write down as many sources of light that you can think of, on your light that you can think of, on your OWN!OWN!

LightLight

VocabularyVocabulary

Electromagnetic Electromagnetic SpectrumSpectrum– – a group of waves that a group of waves that

includes:includes:o Radio WavesRadio Waveso MicrowavesMicrowaveso Infrared LightInfrared Lighto Visible LightVisible Lighto Ultra Violet Light Ultra Violet Light o X-RaysX-Rayso Gamma Rays Gamma Rays

(Visible) Light(Visible) Light– – is the part of the is the part of the electromagnetic electromagnetic spectrum that can be spectrum that can be seen by the human eyeseen by the human eye

TransmissionTransmission– – the movement of light waves the movement of light waves from one place to anotherfrom one place to another

o A medium is not needed for light A medium is not needed for light waves to be transmittedwaves to be transmitted

light traveling through light traveling through space from the Sun to Earthspace from the Sun to Earth

RememberRemember…“…“trans” means acrosstrans” means across ExampExample:le:

PrismPrism- tool used to split white - tool used to split white light into different light into different wavelengths (colors)wavelengths (colors)

eded

rangerange

ellowellow

reenreen

lue lue

ndigondigo

ioletiolet

ROYGBIV

RefractionRefraction– – a change in direction a change in direction (bending) of a light wave (bending) of a light wave due to a change in its’ due to a change in its’ speed speed

ReflectionReflection– – a change in direction of a change in direction of a light wave due to an a light wave due to an obstruction, this gives obstruction, this gives objects “color” objects “color”

ColorColor– – what we visually see what we visually see (the absorbed (the absorbed wavelengths of light)wavelengths of light)

AbsorptionAbsorption– – when an object takes in when an object takes in wavelengths of light, wavelengths of light, what is reflected is what what is reflected is what we see as colorwe see as color

ScatteringScattering– – the spreading of light in the spreading of light in all directions due to all directions due to reflection and reflection and absorption absorption

TransparentTransparent– – when an object allows when an object allows most all light through itmost all light through it

TranslucentTranslucent– – when an object allows when an object allows some light through it some light through it and spreads out the restand spreads out the rest

OpaqueOpaque– – when an object does not when an object does not allow any light to pass allow any light to pass through it because they through it because they reflect and/or absorb the reflect and/or absorb the lightlight

The Electromagnetic The Electromagnetic Spectrum SongSpectrum Song