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Bellwork - PowerPoint PPT Presentation


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Bellwork. Clear everything from desk except: P / P Vocab. Notebooks Label the next entry “Light Vocabulary” Go to the page that you will be taping your vocabulary sheet to and write down as many sources of light that you can think of, on your OWN!. Light. Vocabulary.

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Presentation Transcript
bellwork
Bellwork

Clear everything from desk except:

  • P / P
  • Vocab. Notebooks

Label the next entry “Light Vocabulary”

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

light

Light

Vocabulary

electromagnetic spectrum
Electromagnetic Spectrum

– a group of waves that includes:

  • Radio Waves
  • Microwaves
  • Infrared Light
  • Visible Light
  • Ultra Violet Light
  • X-Rays
  • Gamma Rays
visible light
(Visible) Light

– is the part of the electromagnetic spectrum that can be seen by the human eye

transmission
Transmission

– the movement of light waves from one place to another

  • A medium is not needed for light waves to be transmitted

light traveling through space from the Sun to Earth

Remember…“trans” means across

Example:

prism
Prism

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

ed

range

ellow

reen

lue

ndigo

iolet

refraction
Refraction

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

reflection
Reflection

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

color
Color

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

absorption
Absorption

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

scattering
Scattering

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

transparent
Transparent

– when an object allows most all light through it

translucent
Translucent

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

opaque
Opaque

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