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

Science test G@C

study universe

QuestionAnswer
If an observer would see red shift. What is the universe doing? Expanding
What is Hubble's Law? When an object is moving towards you it has a higher frequency and when it is moving away from you it has a lower frequency.
What is the Doppler Effect? The difference between the frequency at which sound or light waves leave a source and that at which they reach an observer.
What is Red Shift? When an object is moving away from you the more spaced out the waves are, making the frequency lower.
What is the life cycle of a low mass star? Nebula, average star, red giant, planetary nebula, white dwarf, black dwarf.
What is the life cycle of a high mass star? Nebula, massive star, supergiant, supernova, neutron star/black hole.
What is Blue Shift? When an object is moving towards you the closer the waves are, making the frequency higher.
What force causes a nebula to condense into a star? Gravity
How many miles is 1 light year? 5,878,625,373,184
What type of reaction at the core of a star that fuels the star? Fusion (combining) of hydrogen into helium
What is on the X axis of an HR Diagram? Temperature
What is on the Y axis of an HR Diagram? Luminocity
What is a Habitable Zone? The distance from a star where a rocky planet could have water on the surface.
How does a star's size affect its Habitable zone? The bigger the star the farther away the habitable zone is.
Which type of stars are likely to allow the evolution of complex life? If a planet is in the middle of the habitable zone and it has water on the surface, it can support life.
Created by: gav is study
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