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19 Cards in this Set

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What is nearsighted?
People who have trouble seeing far away.
What is farsighted?
People who have trouble seeing close objets.
conave lens
thin in middle, thicker edges, used for nearsighted people.
convex lens
thicker in middle,used for farsighted people.
prism
bends light rays
light
type of energy that travels as a wave but does not require a medium to travel.
ultraviolet light
causes sunburn
refraction
bending a light ray
electromagnetic radiation
type of energy sun gives off
visible light
part of the electromagnetic spectrum that we can see.
relection
light bouning off.
______ energy wavelengths

are long
low
primary colors

what color is not primary?
blue red yellow and green
transluent
lets some light through/scatters light
transparent
lets all light through
opaque
blocks light (shadow)
red=
longest wavelength
convex
makes things bigger
concave
makes things smaller