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SSI 2007 Gage SSI 2007 Gage Down to Down to Basics Basics Some important terms Some important terms to understand our to understand our solar system solar system
SSI 2007 GageSSI 2007 Gage
Down to Down to BasicsBasics
Some important terms Some important terms to understand our solar to understand our solar
systemsystem
SSI 2007 GageSSI 2007 Gage
On the Move…On the Move…Rotation Rotation
movement of a movement of a body on its body on its imaginary axisimaginary axis
RevolutionRevolutionmovement of one movement of one object around object around anotheranother
SSI 2007 GageSSI 2007 Gage
On the Move…On the Move…Day Day
period of time for period of time for one complete one complete rotationrotation
YearYearperiod of time for period of time for one complete one complete revolutionrevolution
Orbit path of a body path of a body during during revolutionrevolution
SSI 2007 GageSSI 2007 Gage
Things that Move…Things that Move…Solar systemSolar system
a star and the a star and the celestial objects celestial objects that orbit the starthat orbit the star
Our solar system Our solar system contains the Sun, contains the Sun, planets, moons, planets, moons, asteroids, and asteroids, and cometscomets
NASA
SSI 2007 GageSSI 2007 Gage
Things that Move…Things that Move…StarStar
self-luminous object; our star is called self-luminous object; our star is called the Sunthe Sun
SatelliteSatellitesmaller object that orbits a larger objectsmaller object that orbits a larger object
PlanetPlanetobject that orbits a starobject that orbits a star
MoonMoonobject that orbits a planetobject that orbits a planet
SSI 2007 GageSSI 2007 Gage
Things that Move…Things that Move…AsteroidAsteroid
small rocky body that orbits the Sun; small rocky body that orbits the Sun; may be contained in the asteroid beltmay be contained in the asteroid belt
CometComet““dirty snowball” composed of ice, rocky dirty snowball” composed of ice, rocky material, dust and gases; very eccentric material, dust and gases; very eccentric orbit orbit
SSI 2007 GageSSI 2007 Gage
Cover-Ups…Cover-Ups…AtmosphereAtmosphere
blanket of blanket of gases that gases that surrounds a planetsurrounds a planet
Venus Jupiter Titan (moon)Has an atmosphere
Ganymeade (moon) Mercury Has no atmosphere
