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


physical science moons chapter

planet any of the nine primary bodies that orbit the sun; a similar body that orbits another star.
Dwarf Planet is defined as an object that is orbiting the Sun, is nearly spherical, but has not cleared matter from its orbital zone and is not a satellite.
Small Solar System Bodies All objects in the solar system that are not planets, dwarf planets, or moons.
(AU) a measurement for distances based on the distance from earth to the sun
Terrestrial Planets The name given to the four inner planets: Mercury, Venus, Earth, and Mars
Giant Planets Jupiter, Saturn, Uranus, and Neptune
Asteroids small, rocky bodies orbiting the Sun and lying mainly in a narrow belt between Mars and Jupiter.
Meteoroids remnants of comets and asteroids in space
Meteor A streak of light in the sky produced by the burning of a meteoroid in Earth's atmosphere
Meteorite stony or metallic object that is the remains of a meteoroid that has reached the earth's surface
Kepler's First Law states that each planet moves in an orbit that has the shape of an ellipse, with the Sun located at one focus
Kepler's Second Law states that an imaginary line between the Sun and a planet moves over equal areas of the ellipse during equal time intervals.
Kepler's Third Law states that the square of the period of a planet's orbit is proportional to the cube of that planet's semi major axis.
solar system the sun and all the planets and other bodies that travel around it.
satellite a natural or artificial body that revolves around a planet.
Created by: ultimate3