Chapter 18 PowerPoint Chapter Review Questions Mrs. Miller 6A light.
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Transcript of Chapter 18 PowerPoint Chapter Review Questions Mrs. Miller 6A light.
![Page 1: Chapter 18 PowerPoint Chapter Review Questions Mrs. Miller 6A light.](https://reader035.fdocuments.us/reader035/viewer/2022081513/56649e425503460f94b3538f/html5/thumbnails/1.jpg)
Chapter 18
PowerPointChapterReview
Questions
Mrs. Miller6A
light
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What do you “think”when you hear
the wordopaque?
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???Answer???
NO WAY!
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What do “think” when you hear
the wordtranslucent?
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???Answer???
SOME!
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What do “think” when you hear
the wordtransparent?
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???Answer???
ALL!
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Name threeKinds of mirrors.
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???Answer???
planeconvexconcave
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What carriesthe signals
generated by therods and cones *TO* your brain?
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???Answer???
your optic nerve
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Describe thelight that a laser
producesin ONE word.
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???Answer???
coherent
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What is thereason that a
laser beam can travel through a
curled-up optical fiber?
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???Answer???
because oftotal internal reflection
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What color woulda red tomato
appear under ablue light?
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???Answer???
The tomato wouldappear black!
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Name 3 things that can
occur whenlight strikesan object.
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???Answer???
The light can be:• reflected• absorbed• transmitted
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Clear glass, water, and
air are examples of what kind of
material?
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???Answer???
transparent
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What happenswhen light passes
from air intowater?
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???Answer???
The lightSlows down
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What happens when white light
strikes a black object?
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???Answer???
no light isreflected
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What is the hole through which
light entersthe eye?
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???Answer???
Thepupil
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What happenswhen parallel rays
of light hit asmooth surface?
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???Answer???
regularreflection
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What are theprimary colors of
LIGHT?
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???Answer???
RedGreenBlue
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Are frosted glassand wax paper:
transparenttranslucent or opaque?
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???Answer???
translucent
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Describe what ishappening if a
person isnearsighted.
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???Answer???
•they don’t see well far away•their eyeballs are a little too long
Nearsightedness
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What do we calllong, thin strandsof glass or plasticthat carry light for
long distanceswithout allowing the light to fade.
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???Answer???
Optical fibers
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What do we callthe transparent
front surfaceof the eye?
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???Answer???
cornea
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What do we callan image of adistant object
caused by refraction of light?
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???Answer???
mirage
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What device useslenses to focuslight rays and
record an imageof an object on
photographic film?
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???Answer???
camera
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Where are therods and cones
located?
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???Answer???
On the retina
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What occurs when parallelrays of lighthit a rough
or bumpy surface?
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???Answer???
diffusereflection
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What aresubstances called
that are usedto color
other materials?
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???Answer???
pigments
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What instrumentis used in
holography?
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???Answer???
A laser
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What do any twoprimary colors of light
combined inequal amounts
produce?
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???Answer???
A secondary
color
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Name a difference between the
refracting telescope and the
reflecting telescope.
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???Answer???
Refracting telescope - uses lenses
Reflecting telescope - uses mirrors
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This is located where the optic nerve
begins, and it is part of the retina.
What is it?
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???Answer???
theblind spot
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What is aninstrument called thatuses a combination
of lenses toproduce enlarged
images of tiny objects?
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???Answer???
Amicroscope
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What is it calledwhen the surface of a mirror curvesinward, like the
inside of a bowl?
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???Answer???
concavemirror
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What instrumentsuses lenses or mirrors
to collect andfocus light fromdistant objects?
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???Answer???
telescopes
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Because the lightrays never meet,a concave lens
can produce whatkind of image?
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???Answer???
only avirtual image
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What are thelight-sensitive
cells of the eye?
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???Answer???
Rods and cones
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What kind oflenses or mirrors
can usually be used to correct
farsightedness?
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???Answer???
convex lenses
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A photographicslide is an
example of what?
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???Answer???
Color filter
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What do we callthe bending oflight rays asthey enter
a new medium?
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???Answer???
refraction
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What do we calla curved piece of glass
or other transparentmaterial that is used
to refract light?
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???Answer???
lens
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Why are lasersuseful insurgery?
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???Answer???
laser incisionsusually healfaster thanscalpel cuts
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What shape is a lensthat is thinner inthe center thanat the edges?
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???Answer???
concave
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What do we callthe colored ring of
muscle that controlsthe size of the
pupil?
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???Answer???
iris
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What do we callthe bending of
light rays as theyenter a newmedium?
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???Answer???
refraction
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What helps the lensrelax or contract
when focusing onobjects nearby
or far away?
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???Answer???
Ciliary muscles
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_________________is formed wherelight rays meet
at a point.
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???Answer???
A real image
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A mirage is causedby ____________
as light passes throughlayers of airat different
________________.
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???Answer???
refraction
temperatures
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What is thecolored ring ofmuscle around
the pupil?
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???Answer???
iris
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A ________ lens isthicker
in the centerthan at its edges.
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???Answer???
convex
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To focus light, muscles in the eye
change the length andthickness of the____________.
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???Answer???
lens
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Nearby objectsappear blurry
to a personwho is
_____________.
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???Answer???
farsightedness
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What part of a your eye helps you
see in dim light?
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???Answer???
The rods
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What part of a telescope ormicroscope
magnifies theimage?
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???Answer???
The eyepiece
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What do we call light waves that are
in step, or havecrests aligned
with crests?
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???Answer???
coherent
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When the threeprimary colors of
PIGMENTS aremixed, what is theresulting color?
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???Answer???
black
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When you focuson a distant object,what does the lens
in your eye do?
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???Answer???
The lens becomeslonger and thinner
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What part of theeye functions onlyin bright light and
responds to color?
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???Answer???
The cones
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What do we callthe point at which
light raysmeet?
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???Answer???
The focal point
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What is ahologram?
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???Answer???
a three-dimensional
photograph
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How are signalssent through optical fibers?
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???Answer???
The lasers convertelectrical signals
into pulses of light.
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As parallel rays oflight pass through
a(n)_________ lens,they are bent toward
the center ofthe lens.
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???Answer???
convex
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Because ofrefraction, what do
glass prisms separatewhite light into?
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???Answer???
a visiblespectrum of colors
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What does aMaterial’s Index of
Refraction measure?
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???Answer???
It measures how much a ray of light
BENDS when it enters that material.
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________________occurs when
parallel rays of lighthit a bumpy,
or uneven,surface.
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???Answer???
Diffuse reflection
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What sciencechapters
will we coverthe last
Nine Weeks?
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???Answer???
Chapter 19Chapter 20Chapter 13Chapter 14
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It is A LOT of inkbut these slidesCAN be printedas flashcards!
??DID YOU KNOW??
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What is a color filter?
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???Answer???
It is a transparentmaterial that allows
certain colors oflight to pass
through it andreflects or absorbs
other colors.
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What is the nameof the layer
of cells lining theinside of the
eyeball?
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???Answer???
retina
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Why is the whiteback and tail of a skunk
appear whiteand the legs look black?
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???Answer???
White – reflects all colors of light
Black – absorbs all colors of light
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Explain why a pencilin a glass of water
appears bentlooking at it
from the side!
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???Answer???
Because the raysthat pass throughthe lens are bent
away from thecenter of the lensand spread out!
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What is theWeb address
of your sciencetext Online?
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Are you alsostudying from your comparison *chart*
of plane-concave-convexthat you made in class?
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???Answer???
Yes!It is VERY HELPFUL!
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What do you get if you overlapall the primary colors of light?
What do you get if you overlapall the primary colors of pigment?
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???Answer???
White
Black
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So, how does a television showthe color black?
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???Answer???
The TV switchesoff all the coloredlights in the area
of the screenthat appears black!
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What colors areused in thefour-color
printing process?
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???Answer???
CyanYellowMagentaBlack
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Another Web sitelinked to your
textbook iswww.phschool.com
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???Answer???
www.phschool.comI like their HOT LINKS
And INTERNET ACTIVITIES
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The End