Vocabulary
Light Waves
Radiation
Interactions: Light Wave Velocity
Electromagnetic Spectrum
Radio Waves
Microwaves
Infrared Light Waves
Visible Light
Ultraviolet Light Waves
Name ____________________________________
Explanation
A wave that the energy moves perpendicular to the direction of the wave ( type of
__________________wave) that does not require _______________to move the energy (called an
____________________________wave)
The emission of energy in the form of
____________________________waves
Through a near – vacuum =
_________________________ m/s
All electromagnetic radiation travels at the speed of visible light, but have different wavelengths
The range of light waves from longest to shortest _____________________
(lowest to highest
____________________________)
Lowest energy and
____________________________ wavelength/_____________________ frequency of EM waves
Carry more energy than radio waves, but less than infrared waves
Drawing/Examples
Travel in straight lines until striking an object
All light waves!
Why do you see lightening before you hear thunder?
(complete separate chart of spectrum)
Examples:
Examples:
Infra means _________________
Emitted by the _______________
Directly below first color we can see on the visible spectrum
A very small part of the EM Spectrum and a form of
_______________________ energy
Ultra means ________________
Emitted by the ______________
Can be useful or harmful
More energy than visible light waves, so directly after the last color we can see on the EM spectrum
List the colors we can visibly see in order from lowest to highest frequency:
Useful:
Harmful:

X Rays
Gamma Rays
Law of Reflection
Absorption
Scattering
Interactions: Refraction of visible light
Interactions: Diffraction of visible light
Interactions: Reflection of visible light
Interactions: Interference of visible light
Transmittance / Transmission
Colors
Penetrates the skin without being absorbed by the _____________
Highest energy and
________________________ wavelength/______________________ frequency of EM waves
Angle of ______________________ = the angle of ____________________
Diagram:
Transfer of _____________________ carried by light waves to particles of
__________________________
The release of light ________________ by particles of matter that have absorbed energy
The bending of the wave due to moving from one medium to another, which is caused by the ___________________ of the wave in the new medium
Light waves strike an object and new waves are produced (go around the barrier)
The ____________________________ of the light wave
Two or more waves ________________ and combine as a result of
_________________________
The passing of light
___________________ matter
_____________ = all the colors of light reflected
_____________ = all colors absorbed
Specific colors = the specific color you
“see” is being __________________and all others are _____________________
Wear metal shield over other parts of body to shield from the high energy waves
Useful to medical profession:
(“Bear Lab”)
Why you can see across a room by looking in a mirror or other reflective surface
Feel warmth?
Why the sky is _____________
Why doesn’t light diffract well?
Transparent –
Translucent –
Opaque –
Why do we wear dark color clothes in winter and lighter color clothes in summer? (think about absorption/reflection)