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

sound and light

sound energy energy caused by vibrating particles in matter
pitch the highness or lowness of a sound
frequency the number of vibrations that occur in a unit of time
volume the loudness of a sound
tuba instrument with a low pitch and low frequency
flute instrument with a high pitch and a high frequency
medicine, entertainment, every day uses, and exploration ways we use sound
gas sound travels the slowest in which state of matter
decibels volume is measured in this unit
85 dB if sound reaches this number of decibels, it can be damaging to your ears
wave a disturbance that transmits energy
waves sound travels in this way
light form of energy that moves in waves and can travel through space
electromagnetic spectrum a range of light organized by frequency and wavelength
opaque absorbs most light.... no light passes through it
wood, stone, metal materials that are opaque
transparent absorbs very little light... most light passes through it
clear glass, air, pure liquid water materials that are transparent
translucent absorbs a little light... little light passes through it
frosted glass, ice, wax paper materials that are translucent
prism a transparent material that bends and separates white light into the colors of the rainbow
reflection the bouncing of light waves that reverses the image
refraction the bending of light waves
straight lines the way that light travels