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

The Celestial Sphere

Locating objects in space

QuestionAnswer
Astrolabes Tools for Locating objects in space
Orientation Celestial poles- line up with the earths rotational axis (Earth's North and South pole) Celestial equator lines up with the earths equator
Ecliptic The plane in which the earth revolves around the Sun, also includes the 12 constellations of zodiac.
Zenith the point in the sky that is directly above the observer changes as the observer changes latitudes
Meridian The line that passes through the celestial poles and the observers zenith.
Transit When a celestial object crosses the meridian and begins to set.
Location on Earth is defined by Latitude and Longitude
Location in the celestial sphere is defined by declination and right ascension
Declination Degrees North or South from the Celestial Equator.
Right ascension acts as the east/west measurement (hours, minutes, seconds)
Where sun crosses the meridian on the spring equinox 0 degrees
Rt. ascension/angular distance between stars can be approximated 1 minute = 0.25 degrees or 1/2 moon diameter 4 minutes= 1 degree 1 hour = 15 degrees
Azimuth The angle around the horizon from due north. North- 0 degrees East- 90 degrees South- 180 degrees West- 270 degrees
Altitude The angle above the horizon (0 degrees on horizon) (max altitude would be 90 degrees)
Created by: Riri:>
 

 



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