Busy. Please wait.
Log in with Clever

show password
Forgot Password?

Don't have an account?  Sign up 
Sign up using Clever

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.
Didn't know it?
click below
Knew it?
click below
Don't know
Remaining cards (0)
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


Rotate, Rotation To spin on an axis or the spinning of Earth on its axis that causes day and night to occur.
Axis The imaginary line through the Earth that extends from the north pole to the south.
Tilt The slant of Earth’s axis, which is 23.5 degrees from vertical compared to Earth’s orbital plane around the Sun.
Revolve, Revolution Move in an elliptical path around a center.
Orbital Path The gravitational-curved path of an object around a point in space.
Seasons The four natural divisions of the year based on changes in temperature due to the varied amounts of sunlight.
Hemisphere Earth and the celestial sphere can be divided into northern and southern or eastern and western hemispheres. (Half of a sphere.)
Direct, and Indirect Direct- the shortest possible way without intermediates. Indirect- ways other than the shortest way possibly involving intermediates.
Summer Sun's rays hit the Earth at a more direct angle
Winter Sun's rays hit the Earth at an extreme angle, and the days are very short
Equator imaginary line drawn around the earth equally distant from North Pole and South Pole
Sun Medium Star that Planets including Earth orbits around.
Southern Hemisphere South of Earth where summer first starts.
Northern Hemisphere North of Earth where winter first starts.
Created by: s601111
Popular Earth Science sets




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:
restart all cards