Busy. Please wait.
Log in with Clever

show password
Forgot Password?

Don't have an account?  Sign up 
Sign up using Clever

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.
Your email address is only used to allow you to reset your password. See 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.
Didn't know it?
click below
Knew it?
click below
Don't Know
Remaining cards (0)
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

Phys Sci - Chpt 18

vocabulary words

electromagnetic wave transverse waves made of changing electric and magnetic fields
photons packets of electromagnetic energy
intensity rate at which a wave's energy flows through a given unit of area
electromagnetic spectrum the full range of frequencies of electromagnetic radiation
amplitude modulation amplitude of wave is varied - AM radio transmits this way
frequency modulation the frequency of the wave is varied - FM radio broadcasts this way.
transparent transmits light -(light passes through-clear image)
translucent scatters light - (light passes through but images are fuzzy)s
opaque either absorbs or reflects all of the light that strikes it (cannot see through)
image copy of an object formed by reflected waves of light
regular reflection happens when parallel light waves strike a surface and it all reflects in the same direction.
diffuse reflection happens when parallel light waves strike a rough, uneven surface and it reflects it many different directions
polarized light light with waves that vibrate in only one plane
scattering light is redirected as it passes through a medium
primary colors can be combined in many ways to create all possible colors - Light - red, green and blue; pigment - cyan, yellow and magenta
secondary colors Light - cyan, yellow and magenta (these are a combination of two primary colors); pigments - red, green and blue
complementary colors of light any two colors of light that combine to form white light
pigment material that absorbs some colors of light and reflects other colors
complementary colors of pigments any two colors of pigments that combine to make black
dispersion process where white light separates into colors
Created by: msparks
Popular Physics sets




Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!
"Know" box contains:
Time elapsed:
restart all cards