Save
Busy. Please wait.
Log in with Clever
or
show password
Forgot Password?
Don't have an account?  Sign up 
Sign up using Clever
or
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.
focusNode
Didn't know it?
click below
 
Knew it?
click below
Don't Know
Remaining cards (0)
Know
0:00
edit
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

Chapter 9

Revise Light

QuestionAnswer
Define light. Light is the visible part of the electromagnetic spectrum.
Describe the difference between luminous and non luminous objects. Luminous objects actively give off light. Non-luminous objects only reflect light.
Can you describe how light travels? Light travels as a wave and in straight lines.
Explain why shadows are formed. Shadows are caused by something opaque getting in the way of light. Light travels in straight lines and this makes shadows as it cannot bend around the object.
What is an eclipse? An eclipse is when the something passes in front of the sun and blocks out it's light. There are Lunar and Solar eclipses.
What is dispersion? Dispersion is light being scattered by either hitting an uneven surface or passing through an uneven transparent object.
What colours is white light made up of? All of them, Red, Orange, Yellow, Green, Blue, Indigo and Violet.
How is a rainbow formed? When light from the sun hit a rain drop and is refracted and separated into its individual colours. You can only see a rainbow when the Sun is behind you.
Define reflection. A reflection is the bouncing back of light, without dispersing it so that the image is reflect back at you and you can see it.
Define refraction. Refraction is the separating of light from white into its separate colours. Or the bending of light as it passes from one medium to another.
Describe how you could show refraction from air to water and from water to air. By placing a pencil into a glass of water you can see refraction from air to water. If you are under the water and look to the sky you can see refraction from water to air.
Give a use for a convex lens. To magnify an image to better see it or read.
Give a use for a concave lens. To make an image appear farther away than it is.
Created by: SC Dave
Popular Physics sets

 

 



Voices

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:
Retries:
restart all cards