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

Unit 7:S and S

Eighth Grade Science

TermDefinition
Equinox Daytime hours are equal to nighttime hours. March 21 is the vernal equinox, and September 21 is the autumnal equinox
Solstice December 21 (Winter) is the shortest day of the year, and June 21 (Summer) is the longest day of the year
Nuclear Fusion How a star makes enormous amounts of energy
Nebula A large cloud of gas and dust that spread out in an immense volume
Protostar A contracting cloud of gas and dust with enough mass to form a star
Axial Tilt 45 degree angle, that is the reason for our seasons
Brightness The amount of light energy falling on a surface. As distance increases, this decreases
Luminosity A total amount of light given off in all directions. Distance affects brightness, but not this
Main Sequence The stage of life that our Sun is currently in
Red Giant When a main sequence star starts to run out of fuel, it becomes this. Someday, our Sun will become this
White Dwarf A dying red giant becomes this. Someday, our Sun will become this
Created by: FutureFarmer
Popular Literature 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