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

Ch26.2-3 Stars

Star Life Cycle

QuestionAnswer
Nebula Cloud of dust and gas (mostly hydrogen) that forms stars.
What must happen inside nebula for a star to form (3 things)? 1. Gravity contracts the nebula; 2. Temperatures increase to millions of degrees; 3. Nuclear fusion starts
Main sequence stars Young stable stars that are fusing hydrogen
Red star A small, cool, main sequence (1st star) in the life cycle of a low mass star.
Yellow star An average size main sequence star; our sun
Blue star A high mass, very hot main sequence star
Which main sequence star lasts the longest: red, yellow, or blue? Red - low mass stars last the longest (they fuse hydrogen slowly)
Which main sequence star is the hottest and brightest: red, yellow, or blue? Blue stars
Red giants or super giants Older, large, cool stars that fuse helium in their cores and hydrogen in outer shell
What makes main sequence stars change into red giants? Running out of hydrogen to fuse in cores.
White dwarf A small (earth-sized) dim, but hot dying star that remains after red giants collapse.
Black dwarf A white dwarf that has cooled and is not longer releasing energy
Supernova Explosion of a massive star; occurs when star cores are converted to iron and fusion starts.
Neutron star small very dense (city-sized) dead star; it does not give off light but it does give off radio signals.
Black hole The collapse of a super massive star into a single point that is so dense, that its gravity bends space time around it.
How are elements heavier than iron made by stars? In supernova explosions
Created by: burnsie
Popular Earth Science 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