Busy. Please wait.

show password
Forgot Password?

Don't have an account?  Sign up 

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.
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.
Don't know
remaining cards
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:
restart all cards
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


Rotation The spinning of an object on its axis.
Axis An imaginary line that goes through the North Pole and the South Pole
Revolution The movement of one object around another object
revolves move in a circular orbit around. "the earth revolves around the sun causing seasons"
Direct Sunlight When a hemisphere is receiving light rays from the sun STRAIGHT on.
Tilted Not straight up. Slightly slanted . Earth has seasons because its axis is tilted.
When a hemisphere is tilted towards the Sun, it experiences more sunlight hours resulting in what season? Summer
North Pole The top of Earth's Axis.
South Pole The bottom of Earth's Axis.
When a hemisphere is tilted away from the Sun, it experiences less daylight hours resuling in what season? Winter
Opposite Northern and Southern Hemispheres have opposite seasons. When the Northern Hemisphere is in Winter, the Southern Hemisphere is in Summer.
The amount of Earth's surface that is covered in sunlight at one time Half
seasons The TILT of Earth's axis and REVOLUTION causes Seasons.
Indirect Sunlight. When a hemisphere is receiving light rays from the Sun at an ANGLE.
Southern Hemisphere The hemisphere south of the Equator.
Northern Hemisphere The hemisphere north of the Equator.
Spring / Fall When the length of day equals the length of night. Neither hemisphere is tilted towards the Sun. 12 hrs day and 12 hrs night
23.5 degrees The degree Earth is tilted at.
Equator The imaginary line that cuts the Earth into Northern and Southern Hemispheres
Longer Summer has these length of days. 15 hrs DAY and 9 hrs NIGHT
Shorter Winter has these length of days. 15 hrs NIGHT and 9 hrs DAY
Summer Solstice (1st day of Summer) Longest day of the year and Shortest night of the year
Winter Soltice (1st day of Winter) Shortest day of the year and Longest night of the year
Autumnal Equinox (equal=12 hrs day and 12 hrs night) First day of Autumn/Fall
Vernal (Fresh) Equinox (equal=12hrs day and 12 hrs night) First day of Spring
Created by: vdelag2