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

astronomy final quiz

QuestionAnswer
process of triangulation measuring the angle from two different points and the distance between these points
what do we learn from it distance between stars
luminosity describes total energy emitted by a star (per second)
Luminosity of a star doesn't depend on how far away it is (unlike other measures of brightness like flux or apparent visual magnitude)
symbol (circle w a period in the middle) stands for sun
R((circle w a period in the middle) radius of sun
luminosity of a star depends on its surface temperature and its surface area. (Bigger or hotter stars are more luminous.)
Hertzsprung-Russell (or H-R) diagram is a plot of luminosity vs. temperature (with temperature going backwards).
that red and white dwarfs much more common than stars like our sun, and that giants and supergiants are much less common
which are found on an H-R diagram red dwarfs, white dwarfs, giants, and supergiants
how the lifespan of a star depends on its mass. more mass , higher density in the core, more fusion = hotter and shorter lifetime
the rate at which fusion takes place in a star depends on the density and temperature of the core. depends on the internal conditions, such as density and temperature
stars that have exhausted the hydrogen in their core typically become giants or supergiants. typically become giants or supergiants.
red dwarfs are expected to be so long lived that they should all still be around
which stars become white dwarfs stars with a mass below the Chandrasekhar limit
neutron star object with a radius of around 10 km, made of neutrons.
Created by: as12
Popular 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