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What is the wavelength of visible light?
400-700nm.
What do you call the electromagnetic wave that the human eyes can see?
Visible light
Give an example of source for white light?
SUN (natural) or light from flashlight or bulb (artificial source)
TRUE or FALSE. When light travels from vacuum to Earth, the speed increases.
FALSE
What is the speed of light?
300,000 km/s
What color will you see if all the wavelength in the visible light is absorbed except red?
Red
What color is perceived in the shortest wavelength of the visible light?
Blue, Indigo, Violet
What color is perceived in the longest wavelength in the visible light?
Red
What color do we see if all the wavelength in visible light is REFLECTED back?
White
What color do we see if all the wavelength in visible light is ABSORBED?
black
White light is made up of what colors?
ROYGGBIV
What is formed when light rays cannot pass through opaque materials?
shadow
Give examples of transparent materials.
Air, Glass, Water
TRUE or FALSE. Light can pass through opaque material.
FALSE
TRUE or FALSE. Light can pass through transparent medium.
TRUE
Light travel as ________ called rays.
straight lines
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