Busy. Please wait.
or

show password
Forgot Password?

Don't have an account?  Sign up 
or

Username is available taken
show password

why


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.
We do not share your email address with others. It is only used to allow you to reset your password. For details read 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.

Remove Ads
Don't know
Know
remaining cards
Save
0:01
To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the "Know" box, the DOWN ARROW key to move the card to the "Don't know" box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

Pass complete!

"Know" box contains:
Time elapsed:
Retries:
restart all cards




share
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.

TermDefinition
Sphere A rounded circle that's distance from one side to the other is always equal
Waxing Phases of moon cycle in which more of the moon is observable to earth.
Waning Phases of moon cycle in which less of the moon is observable to earth.
Solar eclipse An eclipse in which the sun is obscured by the moon.
Lunar eclipse An eclipse in which the moon appears darkened as it passes through earth's shadow.
Crater Asteroids and meteors leaving a hole shaped mark in the moon
Manta The dark parts of the moon
Solstices The longest and shortest days of the year
Equinox The 2 days of the year in which time length of the day is equal around the earth.
Rotation The process in which a planet spins on it's axis
Revolution The cycle in which the planet goes around the system's star.
Created by: 21.quinton.meney