Save
Upgrade to remove ads
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

vocab 23

QuestionAnswer
the apparent brightness of a star if it were veiwed from a distance of 10 parsecs. absolute magnitude
the brightness of a star when veiwed from earth. apparent magnitude
a galaxy having straight arms extending from its nucleas. barred spiral galaxy
a massive star that has collapsed to such a small volume thats its gravity prevents the escape of radiation. black hole
a galaxy that is round or elliptical in outline. it contains little gas and dust, no disk or spiral arms, and a few hot, bright stars. elliptical galaxy
a system of galaxies containing several thousands of galaxies. galactic cluster
a plot of stars according to their absolute magnitudes and spectral types. hr diagram
found between stars interstellar dust
a galaxy that lacks symmetry irregular galaxy
the distance light travels in a year light year
the cluster of 20 or so galaxies to which our galaxy belongs. local group
a number of given to a celestial object to express its relative brightness. magnitude
a sequence of stars on the hr diagram, containing the majority of stars that runs diagonally from the upper left to the lower right. main sequence
a cloud of intersteallar gas and dust. nebula
a star of extremely high density composed entirely of neutrons. neutron star
a star that explosively increases brightness. nova
a shell of incandescent gas expanding from a star. planetary nebula
a collapsing cloud of gas and dust destined to become a star. protostar
a large, cool star of high luminosity; a star occupying the upper right portion of the H-R diagram. red giant
a flattened, rotating galaxy with pin wheel-like arms of interstellar material and young stars winding out from its nucleus. spiral galaxy
a measure of distance. stellar parallax
a very large star of high luminosity. super giant
an exploding star that increases in brightness many thousands of times. supernova
a star that has exhausted most or all of its nuclear fuel and has collapsed to a very small size; believed to be near its final stage of evolution. white dwarf
Created by: hannahsells
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