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.

By signing up, I agree to StudyStack's Terms of Service and Privacy Policy.


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

Earth, Sun, Moon

QuestionAnswer
Rotation Spinning of earth on its axis
Revolution Movement of the earth around the sun
Axis An imaginary line that goes through the poles
Equator An imaginary line that runs across the middle of the earth
Tilt the slant of the earth on its axis
Hemisphere an imaginary line that divides the earth into halves
lunar cycle appearance of phases of the moon as viewed from earth
waxing when the moon is getting bigger starting from the right side
crescent moon the phase right after or before a new moon
solar eclipse when the moon passes between the sun and earth
gibbous moon when more than half of the moon is lighted
full moon when the whole moon is lighted from the earth
first quarter 7 days after the new moon, the moon is half lit
third (last) quarter 7 days before the new moon, the moon is half lit
new moon when the moon isn't visible at night
ocean tide the rise and falls of sea levels because of the moon's gravitational pull
high tide when the tide is higher that the average, happens twice everyday
low tide when the tide is lower that the average, happens twice everyday
spring tide when the tide is at its highest point, happens twice a month
neap tide when the tide is at its lowest point, happens twice a month
lunar eclipse when the moon passes the earth into its shadow
axial tilt what causes the seasons, it's the angle between the axis and a line perpendicular to the orbit direction
seasons four divisions of the year caused by the tilt of the earth's axis
wave when a body of water curls and breaks on shore
umbra area in which the shadow of the moon on the earth is total, and the area in which a total solar eclipse is experienced
penumbra the area in which the shadow of the moon on earth is partial, and the area in which a partial solar eclipse is experienced
total eclipse it occurs when the moon casts a total shadow called an umbra
partial eclipse it occurs when the moon casts a partial shadow called a penumbra
polaris the star where the north pole always points at
Created by: hannah_kim