Download The Solar System

The Solar System
Overview of Solar System
Solar system: a group of objects in space that
move around a central star
The SUN
Planets: large objects that moves around a star
travel in paths called orbits around the sun
Counter-clockwise
How many? 8 or 9?
Most have at least 1 moon (natural satellite)
Some have rings
 Planetary Posse Video
Overview of Solar System
Asteroids and Comets also move
around the sun
Asteroids- small and rocky, made of metal
and carbon, found mostly between paths of
Mars and Jupiter
Comets- made up of dust and ice
Grouping Planets
Planets divided into 2 groups
 Inner: Mercury, Venus, Earth, & Mars
 Outer: Jupiter, Saturn, Uranus, Neptune,
Pluto
* Separated by asteroid belt
Bill Nye video clip
Grouping Planets
Two other ways to group planets:
1. Composition- what the they’re made of
-Rocky planets: Mercury, Venus, Earth, Mars, Pluto
*heavy, move slowly, no rings, few moons
-Gas planets: Jupiter, Saturn, Uranus, Neptune
*light, move quickly, rings, lots of moons
2. Size
-Small: Mercury, Venus, Earth, Mars, Pluto
-Giant: Jupiter, Saturn, Uranus, Neptune
Mnemonic Device
A sentence that helps us memorize a string
of words
Examples?
Will help us remember the order of the
planets from the sun out
My Very Earnest Mother Just Served Us Nine
Pickles
Every 248 years, Neptune becomes the farthest planet
for 20 years
Homework
1. Create your own mnemonic device
to help you remember the order of
the planets from the sun out
*Mnemonic Device Device
2. Copy Science Cards