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.
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

4th Gr. Solar System


axis imaginary line that goes through the earth from the North Pole to the South Pole
rotation spinning on its axis which creates 24 hours in a day and night
revolution one trip around the Sun
rocky planets Mercury, Venus, Earth, and Mars
gas giants Jupiter, Saturn, Uranus, and Neptune
Sun A star in the center of our solar system
phases how the moon looks over 1 month
first quarter moon half is visible on the right side (day 7)
full moon the whole front of the moon is visible (day 14)
last quarter moon half is visible on the left side (day 21)
new moon the moon is not visible (day 1)
crescent moon less than half of the moon is visible
gibbous moon more than half of the moon is visible
long and thin Shadows in the morning and evening
short and wide Shadows at noon
tilted axis causes the seasons on Earth as it revolves around the Sun
East Sun rises from this direction
West Sun sets in this direction
astronomy the study of the universe
constellations patterns of stars
telescopes a tool used to look at objects in the sky
"My Very Eager Mother Just Served Us Noodles" a funny way to remember the order of the planets
Ursa Minor the Little Dipper and can be seen all year looking North
Ursa Major the Big Dipper and can be seen all year looking North
Orion's Belt 3 stars in a line that can be seen in the winter
North Star the last star on the handle of the Little Dipper
Polaris the North Star
Created by: Leusbyb



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