We think you have liked this presentation. If you wish to download it, please recommend it to your friends in any social system. Share buttons are a little bit lower. Thank you!
Presentation is loading. Please wait.
Published byValerie Morgan
Modified over 4 years ago
Chapter 18 PowerPoint Chapter Review Questions Mrs. Miller 6A light
What do you “think” when you hear the word opaque?
???Answer??? NO WAY!
What do “think” when you hear the word translucent?
What do “think” when you hear the word transparent?
Name three Kinds of mirrors.
???Answer??? plane convex concave
What carries the signals generated by the rods and cones *TO* your brain?
???Answer??? your optic nerve
Describe the light that a laser produces in ONE word.
What is the reason that a laser beam can travel through a curled-up optical fiber?
???Answer??? because of total internal reflection
What color would a red tomato appear under a blue light?
???Answer??? The tomato would appear black!
Name 3 things that can occur when light strikes an object.
???Answer??? The light can be: reflected absorbed transmitted
Clear glass, water, and air are examples of what kind of material?
What happens when light passes from air into water?
???Answer??? The light Slows down
What happens when white light strikes a black object?
???Answer??? no light is reflected
What is the hole through which light enters the eye?
???Answer??? The pupil
What happens when parallel rays of light hit a smooth surface?
???Answer??? regular reflection
What are the primary colors of LIGHT?
???Answer??? Red Green Blue
Are frosted glass and wax paper: transparent translucent or opaque?
Describe what is happening if a person is nearsighted.
???Answer??? they don’t see well far away their eyeballs are a little too long Nearsightedness
What do we call long, thin strands of glass or plastic that carry light for long distances without allowing the light to fade.
???Answer??? Optical fibers
What do we call the transparent front surface of the eye?
What do we call an image of a distant object caused by refraction of light?
What device uses lenses to focus light rays and record an image of an object on photographic film?
Where are the rods and cones located?
???Answer??? On the retina
What occurs when parallel rays of light hit a rough or bumpy surface?
???Answer??? diffuse reflection
What are substances called that are used to color other materials?
What instrument is used in holography?
???Answer??? A laser
What do any two primary colors of light combined in equal amounts produce?
???Answer??? A secondary color
Name a difference between the refracting telescope and the reflecting telescope.
???Answer??? Refracting telescope - uses lenses Reflecting telescope - uses mirrors
This is located where the optic nerve begins, and it is part of the retina. What is it?
???Answer??? the blind spot
What is an instrument called that uses a combination of lenses to produce enlarged images of tiny objects?
???Answer??? A microscope
What is it called when the surface of a mirror curves inward, like the inside of a bowl?
???Answer??? concave mirror
What instruments uses lenses or mirrors to collect and focus light from distant objects?
Because the light rays never meet, a concave lens can produce what kind of image?
???Answer??? only a virtual image
What are the light-sensitive cells of the eye?
???Answer??? Rods and cones
What kind of lenses or mirrors can usually be used to correct farsightedness?
???Answer??? convex lenses
A photographic slide is an example of what?
???Answer??? Color filter
What do we call the bending of light rays as they enter a new medium?
What do we call a curved piece of glass or other transparent material that is used to refract light?
Why are lasers useful in surgery?
???Answer??? laser incisions usually heal faster than scalpel cuts
What shape is a lens that is thinner in the center than at the edges?
What do we call the colored ring of muscle that controls the size of the pupil?
What do we call the bending of light rays as they enter a new medium?
What helps the lens relax or contract when focusing on objects nearby or far away?
???Answer??? Ciliary muscles
_________________ is formed where light rays meet at a point.
???Answer??? A real image
A mirage is caused by ____________ as light passes through layers of air at different ________________.
???Answer??? refraction temperatures
What is the colored ring of muscle around the pupil?
A ________ lens is thicker in the center than at its edges.
To focus light, muscles in the eye change the length and thickness of the ____________.
Nearby objects appear blurry to a person who is _____________.
What part of a your eye helps you see in dim light?
???Answer??? The rods
What part of a telescope or microscope magnifies the image?
???Answer??? The eyepiece
What do we call light waves that are in step, or have crests aligned with crests?
When the three primary colors of PIGMENTS are mixed, what is the resulting color?
When you focus on a distant object, what does the lens in your eye do?
???Answer??? The lens becomes longer and thinner
What part of the eye functions only in bright light and responds to color?
???Answer??? The cones
What do we call the point at which light rays meet?
???Answer??? The focal point
What is a hologram?
???Answer??? a three-dimensional photograph
How are signals sent through optical fibers?
???Answer??? The lasers convert electrical signals into pulses of light.
As parallel rays of light pass through a(n)_________ lens, they are bent toward the center of the lens.
Because of refraction, what do glass prisms separate white light into?
???Answer??? a visible spectrum of colors
What does a Material’s Index of Refraction measure?
???Answer??? It measures how much a ray of light BENDS when it enters that material.
________________ occurs when parallel rays of light hit a bumpy, or uneven, surface.
???Answer??? Diffuse reflection
What science chapters will we cover the last Nine Weeks?
???Answer??? Chapter 19 Chapter 20 Chapter 13 Chapter 14
It is A LOT of ink but these slides CAN be printed as flashcards! ??DID YOU KNOW??
What is a color filter?
???Answer??? It is a transparent material that allows certain colors of light to pass through it and reflects or absorbs other colors.
What is the name of the layer of cells lining the inside of the eyeball?
Why is the white back and tail of a skunk appear white and the legs look black?
???Answer??? White – reflects all colors of light Black – absorbs all colors of light
Explain why a pencil in a glass of water appears bent looking at it from the side!
???Answer??? Because the rays that pass through the lens are bent away from the center of the lens and spread out!
What is the Web address of your science text Online?
???Answer? ?? www.phsuccessnet.com
Are you also studying from your comparison *chart* of plane-concave-convex that you made in class?
???Answer??? Yes! It is VERY HELPFUL!
What do you get if you overlap all the primary colors of light? What do you get if you overlap all the primary colors of pigment?
???Answer??? White Black
So, how does a television show the color black?
???Answer??? The TV switches off all the colored lights in the area of the screen that appears black!
What colors are used in the four-color printing process?
???Answer??? Cyan Yellow Magenta Black
Another Web site linked to your textbook is www.phschool.com
???Answer??? www.phschool.com I like their HOT LINKS And INTERNET ACTIVITIES
Chapter 11 Sound and Light
Chapter 10 Light.
Monday, December 15, 2008 Record homework. Unpack. Get response pad. Permission slips on the stool. Agenda Agenda: Quiz on 16.3 & 16.4 Completion of.
What is Visible light A. EM radiation that has. a wavelength range
Unit 33 - Optics Optics is the study of the behavior and properties of light. This includes it’s interactions with objects including mirrors, lenses, and.
Light Chapter 19.
Mrs. Deininger 7th Grade Physical Science. Don’t Forget... Contestants.
REFRACTION OF LIGHT. REFRACTION THE BENDING OF LIGHT DUE TO A CHANGE IN ITS SPEED.
Light and Optics 4.1 Mirrors form images by reflecting light. 4.2
Chapter 18: Light and Optics
3.6: Mirrors & Lenses 12/15/14. Part 1: Mirrors A.Light is necessary for eyes to see 1.Light waves spread in all directions from a light. 2.The brain.
Get out notes and practice from yesterday Pick up ruler and finish practice from yesterday.
Refraction and Lens. Refraction Refraction: the change in direction of a wave as it crosses the boundary b/w 2 media in which a wave travels different.
Lesson 3 Reading Guide - KC What is the difference between regular and diffuse reflection? What types of images are formed by mirrors and lenses? How.
18.4 Seeing Light Pg
1 Electromagnetic Spectrum Chapter 17 & Electromagnetic Waves Electromagnetic waves are transverse waves that have some electrical properties and.
< BackNext >PreviewMain Section 1 Mirrors and Lenses Rays and the Path of Light Waves Because light waves travel in straight lines, you can use an arrow.
© 2019 SlidePlayer.com Inc. All rights reserved.