Light rays travel
in a straight line
light is visible
energy
in order to see an object it must give off or reflect?
wavelengths of visible light and the light must enter your eyes
transmission
the physical process of light passing through matter
medium
the substance through which light travels
types of matter are (3)
transparent, translucent, or opaque
transparent
matter that allows light to pass clearly through it
translucent
objects that allow some light to pass through, but not all
opaque
matter that does not allow light to pass through
reflection
light bouncing off a surface
refraction
the bending of light when it passes from one transparent material to another
prism
refract white light and breaks it into a band of colors
absorption
energy from light being taken in by an object
black
all colors are absorbed
absorbs the most light
hottest color to wear on a sunny day
white
no colors are absorbed
all colors reflected
coolest color to wear on a sunny day
shadow
absence of light
shadows occur?
an object blocks the light
colors of visible light
ROYGBIV
primary colors of light
red, blue, and green
why does the sky look blue?
because particles in the Earth’s atmosphere cause blue light to scatter more than the other colors in the visible light spectrum
