Busy. Please wait.
or

show password
Forgot Password?

Don't have an account?  Sign up 
or

Username is available taken
show password

why


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.
We do not share your email address with others. It is only used to allow you to reset your password. For details read our Privacy Policy and Terms of Service.


Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
Don't know
Know
remaining cards
Save
0:01
To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the "Know" box, the DOWN ARROW key to move the card to the "Don't know" box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

Pass complete!

"Know" box contains:
Time elapsed:
Retries:
restart all cards
share
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

Light

Gr. 7 - Light Unit

QuestionAnswer
What type of object scatters light? Translucent
What type of object transmits light? Transparent
What type of object absorbs light? Opaque
What type of reflection occurs off of a smooth surface? Regular Reflection
What type of reflection occurs off of a rough surface? Diffuse Reflection
What color is produced when primary light colors combine in equal amounts? White
What color is produced when primary pigment colors combine in equal amounts? Black
What type of mirror has a flat surface? Plane
What type of mirror has a curved surface like a bowl? Concave
What part of the front surface of the eye? Cornea
The color of a transparent or translucent object is the ______ color of the light it transmits. Same
What color is created when equal amounts of blue and red light are combined? Magenta
What color is created when equal amounts of red and green light are combined? Yellow
What color is created when equal amounts of blue and green light are combined? Cyan
What color is created when equal amounts of yellow and cyan pigment are combined? Green
Is the image produced by a concave lens always smaller or bigger? Smaller
When you look in a convex mirror, your image will look like it is in front or behind the mirror? Behind
What is the imaginary line that divides a mirror in half? Optical Axis
What is the point at which rays parallel to the optical axis meet? Focal Point
What mirror can form either a virtual or real image depending on where the object is? Concave Mirror
What causes a mirage? Refraction of light
What type of vision does a person have who has difficulty seeing things close up? Farsighted
What type of vision does a person have who has difficulty seeing things at a distance? Nearsighted
What is the measure of how much a ray of light bends when it enters that material? Index of Refraction
What type of lens is thick in the middle and thin at the edges? Convex
What type of lens is thin in the middle and thick at the edges? Concave
What lens always has an upright and smaller image? Concave
What lens forms either a real or virtual image based on the position of the object? Convex
What type of instrument make small nearby objects look bigger? Microscope
What layer of cells lines the inside of the eyeball? Retina
What part of the cell detects light? Rods
What part of the cell detects color? Cones
What part of the eye contracts and expands to allow less or more light to enter the eye? Iris
What is the opening that allows light to enter the eye? Pupil
What nerve do rods and cones use to send signals to the brain? Optic Nerve
What type of instrument uses lenses or mirrors to collect and focus light from distant objects? Telescope
What type of instrument uses one or more lenses to focus light and film to record an image? Camera
What is a device that produces a narrow beam of coherent light? Laser
What type of picture is a three-dimensional photograph created by using the light from a laser? Hologram
What carries a laser beam light for long distances? Optic Fibers
What type of image does a plane mirror produce? Virtual
What type of lens does an eye have? Convex
Why does a laser light have only one color? Same Wavelength
What type of image is created if you have: Focal Point, Object, Concave Mirror? Virtual Image
What type of image is created if you have: Object, Focal Point, Concave Mirror? Real Image
Created by: kpmueller