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

Sun, Moon & Earth

8th Gr - Ch. 22 Sun, Moon and Earth

What two elements are the Sun mostly composed of? Hydrogen and Helium
What is the distance from the Earth to the Sun called? Astronomical Unit
What is the state of matter of the Sun? Plasma
What are the layers of the Sun? Core, Convective Zone, Radiative Zone and Photosphere
What are the two layers of the Sun's atmosphere? Photosphere and Chromosphere
What are explosive eruptions from the Sun? Solar Flares
What are dark spots on the surface of the Sun? Sun Spots
What if the fraction of gravity on the Moon as compared to Earth's gravity? 1/6
What is the distance from the Sun to the Moon? 93,000 miles
What event can occur on the Sun disrupting communications on Earth? Solar Flares
What type of phases are occurring during the first half of the lunar month? Waxing
What type of phases are occurring during the second half of the lunar month? Waning
What equipment was used to determine the layers of the Moon's interior? Seismometer
What causes the moon to have a thin atmosphere? Weak Gravity and Low Mass
Where would a person be standing to observe a total eclipse? In the Umbra
What is the hottest layer of the sun's atmosphere? Photosphere
What is Earth's only "natural" satellite? Moon
Where are the Sun's rays pointing during the Summer Solstice? Tropic of Cancer
Where are the Sun's rays pointing during the Winter Solstice? Tropic of Capricorn
Where are the Sun's rays directed toward during the Fall and Spring Equinox? Equator
What are steep nearly circular walls that project above the surrounding terrain on the Moon? Craters
What are broad lowland plains of basaltic lava that appear darker on the Moon? Lunar Seas
What is the largest lunar sea? Mare Imbrium
What is the most famous lunar sea? Sea of Tranquility
What galaxy are the Sun, Moon and Earth located in? Milky Way
What is occurring when the Earth passes between the Sun and the Moon? Lunar Eclipse
What is occurring when the Moon passes between the Sun and the Earth? Solar Eclipse
Created by: kpmueller
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