WCS Fill in Blank: Light, Mirrors, and Lenses

the speed of light in space travels at____________

3 million m/s

total internal refraction occurs when______the light waves that strike the boundary between two_______materials can be reflected

all, transparent

an optical fiber is a thin fiber of glass or plastic, covered with another material called______

cladding

white light is composed of different_____from red to violet

colors

optical fibers are used in_____________

communication industry

_____lenses are thicker at the edges than in the center; they cause light rays to______forming an_______image that is smaller than the actual object

concave, diverge, upright

concave mirrors cause light rays to_______

converge

____lenses are thicker in the center than at the edges; they form images based on________the image is form the focal point

convex, how far

at the_______all the light is reflected

critical angle

light travels______when it travels through material such as air, water, or glass

differently

uneven reflection of light waves from a rough surface make a ________reflection

diffuse

convex mirrors cause light rays to______

diverge

light is a(n)_________wave that does not need a medium to travel through

electromagnetic

_________is the distance along the optical axis from the center of the mirror to the________

focal length, focal point

in a concave mirror light waves parallel to the optical axis reflect and pass through the_____________

focal point

flashlights and headlights form a________of light when a light source is placed at the mirror's__________

focus beam, focal point

a telescope uses a_______lens to gather light from distant object

larger

what are the three pigment colors of light?

magenta, cyan, yellow

the material through which a wave traveks us called a ______

medium

compound______uses two convex lenses, the objective lens and the eyepiece lens, to______an image

microscope, magnify

a lens is a transparent object with at least____curved side that causes light to______

one, bend

materials that let no light pass through are called______

opaque

______can make light beam travel in a path that is____________`

optical fibers, curved or twisted

_______mirrors reflect an actual size image that seem to be behind the mirror due to the way the________interprets light

plane, brain

the image formed by a concave mirror depends on the_______of an object relative to the focal point

position

what are the three primary colors of light?

red, blue, green

______telescopes uses a_______mirror to focus light onto a secondary mirror that directs the image to an eyepiece

reflecting, concave

for the eyes to see an object, light must strike the object and ounce off which is called ________

reflection

the law of_______states that the angle of______is equal to the angle of_________

reflection, incidence, reflection

objects appear to have color because they absorb some light waves and reflect others; an object appears because of the light and object_____

reflects

______telescopes use two_____lenses, and objective lens and an eyepiece, to from an image of a distant object

refracting, convex

the bending of light waves caused by a change in speed as they pass through different mediums is called________

refraction

______reflections result from a smooth surface (mirror)

regular

_______is light waves traveling in on direction are made to travel in many different directions

scattering

convex mirrors are used for______

security

the key difference between a telescope and a microscope is the____of the objective lens

size

the_____of the critical angle depends on the two materials involved

size

all the light that enters one end of the optical fiber comes out the other end because of________

total internal reflection

materials that let some, but not all light pass through are called_______

translucent

______materials let almost all light pass through them

transparent

the image formed by a convex mirror is_______and______than the actual object

upright, smaller

light is a wave that carries energy; a light source emits a countless number of ____ that travel in all directions

waves