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

Ch 4 Section 1&2

Science Key Terms

transparent material transmits most of the light that strikes it
translucent material scatters light as it passes through
opaque materials reflects or absorbs all of the light that strikes it
primary colors three colors that combine to make any other color
secondary colors two primary colors that combine in equal amounts
complementary colors any two colors that combine to make white light
pigments colored substances that are used to color other materials
ray light waves as straight lines
regular reflection when parallel rays of light hit a smooth surface
diffuse reflection when parallel rays of light hit a bumpy or uneven surface
plane mirror a flat sheet of glass
image a copy of an object formed by reflected waves of light
virtual image an upright image that forms where light seems to come from
concave mirror a mirror with a surface that curves inward
optical axis an imaginary line that divides in half
focal point the place at which rays parallel to the optical axis meet
real image when rays actually meet
convex mirror a mirror with a surface that curves outward
magenta, cyan, yellow examples of pigment colors
green, violet, orange examples of secondary colors
red, blue, green examples of primary colors
Created by: lkdickson
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