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

Optics lesson 1

What is light? Light is a form of energy
What is rectilinear propagation of light? Light always travels in a straight line
Ray model of light light is represented by a straight line or ray
What do you mean by transmit? Pass through
What do you mean by reflect? Bounce back into the same medium
What do you mean by absorb? Get trapped in it
What is a transparent material? Allows light to pass through freely. Only a small amount of light is absorbed or reflected
What is a translucent material? allows most rays to pass through, but the rays are scattered in all directions
what is an opaque material? Prevents any light from passing through it. it will only absorb or reflect light
what is a shadow? A shadow is an area where direct light from a light source cannot reach due to obstruction by an object.
what is the relationship between the size of shadow and distance of object from light source? the farther an object from a source of light, the smaller its shadow will be
give example of transparent material clear glass
give example of opaque material mirror
give example of translucent material wax paper
Created by: akhehra
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