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25 Cards in this Set
- Front
- Back
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Electromagnetic Wave |
Waves that don't need a medium to travel through, and can travel through a vacuum |
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Radiation |
EM waves that travel a distance |
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EM Spectrum |
The classification of waves by frequency (in order from highest frequency to lowest) (Radio wave , Microwave, Infrared, Visible Light, Ultraviolet, X-Rays, Gamma Rays) |
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Transmission |
The act of transferring a wave through a medium |
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Absorption |
The disappearance of a substance into a medium, energy is transfers by the wave converted to another form of energy, usually thermal |
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Transparent |
When an object allows light through, the object appears clear, or see through |
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Translucent |
When an object allows some light through, however you cant see a detailed image. Semi- transparent (spreads in all directions) |
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Opaque |
When an object does not allow light through, you are unable to see through |
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Pigments |
Opaque forms of color (ex. color) |
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What are some properties of EM waves |
Vibrating electric and magnetic fields travel at the speed of light in a volume. Transfer of energy, can interact with matter |
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What is transferred by EM waves? |
Electromagnetic Radiation |
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What do all EM waves have in common? |
Electrical and Magnetic properties |
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Which EM waves have the longest wavelength and lowest frequencies |
Radio Waves |
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Which EM wavs have the shortest wavelength and highest frequencies? |
Gamma Rays |
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What can visible light be separated into? |
The colors of the rainbow (ROYGBIV) |
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What are the primary colors of light? |
red, green, blue |
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What happens when white light strikes a black object |
The black object absorbs the white light, none is reflected. |
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What color is a tomato under blue light? |
Black |
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What happens when you combine the primary colors of light? |
White light |
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Why does an apple paper red? |
The apple absorbs all light except for red, it reflects the red light, which our eyes see as red. |
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What is the relationship between frequency and wavelength of EM waves? |
Frequencies increases, wavelength decreases |
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Convex lens |
Bends light inward, reflection is smaller |
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Concave lens |
Bends light outward, reflection is larger |
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Refraction |
The bending when waves pass through a change in medium |
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What happens when light enters a new medium in terms of speed? |
If the medium is dense the object speed decreases, however if the medium is less dense, the object will increase speed.
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