Norm Herr (sample file) December 7, 2011 11/15/99 Norm Herr (sample file)

Norm Herr (sample file) Objective: Make a model of the solar system that shows the relative orbit distances and sizes of the planets Finish Ellipse Lab Inner Planet Notes Dimensions of the Solar system project 11/15/99 Norm Herr (sample file)

Norm Herr (sample file) SOLAR SYSTEM The Sun Planets Satellites of the planets Comets and asteroids 11/15/99 Norm Herr (sample file)

Norm Herr (sample file) SUN 75% hydrogen and 25% helium by mass Sun converts hydrogen to helium in its core Differential rotation equator the surface rotates once every 25.4 days near the poles it's as much as 36 days Core conditions temperature is 15.6 million Kelvin pressure is 250 billion atmospheres 11/15/99 Norm Herr (sample file)

The Inner Planets

Norm Herr (sample file) MERCURY Orbit highly eccentric Closest to sun Appears to travel fastest 8th largest Mercury is solid and is covered with craters. Mercury has almost no atmosphere. Rocky planet 11/15/99 Norm Herr (sample file)

Norm Herr (sample file) VENUS 2nd from Sun 6th largest Brightest object in the sky besides Sun and Moon Observed in the morning or evening Sometimes called morning star or evening star The atmosphere completely hides the surface and traps the heat. Greenhouse effect Rocky planet 11/15/99 Norm Herr (sample file)

Norm Herr (sample file) EARTH 3rd from the Sun Moon is 1/6 mass of earth period of rotation: 24 hours period of orbit 365.25 days Rocky Planet 11/15/99 Norm Herr (sample file)

Norm Herr (sample file) MARS Mars is the 4th Planet from the Sun Solid carbon dioxide is found at the poles Mars is known as the Red Planet Mars has a thin atmosphere that contains mostly carbon dioxide. Mars has two small moons. Rocky Planet 11/15/99 Norm Herr (sample file)

Moons of Mars Phobos Deimos

Asteroid Belt 11/15/99