Busy. Please wait.

show password
Forgot Password?

Don't have an account?  Sign up 

Username is available taken
show password


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
remaining cards
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:
restart all cards
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

6th Grade Ch 19

Light, Mirrors, and Lenses

light ray a narrow beam of light that travels in a straight line
electromagnetic wave waves created by vibrating electric charges that can travel through space or through matter
medium the material through which a wave travels
transparent materials that let nearly all light pass through them
translucent allows only some light to pass through
opaque materials that let no light pass through them
law of reflection states that the angle of incidence is equal to the angle of reflection
focal point point on the optical axis of a mirror or lens where rays traveling parallel to the optical axis pass through
focal length distance along the optical axis from the center of a mirror or lens to the focal point
concave lens lens that is thicker at the edges than it is in the middle
convex lens lens that is thicker in the middle than it is at the edges
refraction bending of a wave as it changes speed while passing from one medium to another
lens a transparent object with at least one curved side that causes light to bend
concave mirror mirror with a surface that curves inward; causes light rays to converge
convex mirror mirror with a surface that curves outward; causes light rays to diverge
Created by: MsHollinger