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

7.1 Glossary

TermDefinition
Accretion The process in which particles of dust and rock slowly come together due to gravity to form a larger object
Binary Star System Two stars that orbit a common center of mass
Black hole A collapsed star so massive that not even light can escape from its gravitational field
Galaxy A large group of stars attracted to one another by gravity
Gravitational lensing The bending of light rays due to the distortion of space caused by a massive object such as a black hole
Gravity The force that cause all matter to collect together
Light-year The distance light travels in a year
Milky Way The Galaxy in which the solar system is located
Nebula A cloud of gas found in empty space between stars
Nuclear Fusion The process in which hydrogen is converted into helium to produce light and heat
Parallax A technique used to measure the distance to other stars
Parsec An astronomical unit of length equal to 3.26 light years
Protoplanetary Disk Disk of gas surrounding a Protostar that will form into planets
Protostar A collapsing cloud of gas that will eventually become a star
Radiation pressure The force produced by radiation from pressure caused by heat
Stellar Parallax The apparent change in the position of a star throughout the year due to the Earths motion around the sun
Super-massive Black Hole A black hole millions or billions of times the mass of our Sun found at the center of a galaxy
Created by: KHOO02
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