Dwarf planets Ceres and Pluto

What is a Planet? Write down on #1 what you think a planet is

Dwarf Planet Orbits the sun Has enough mass to be a round shape (or as round as possible) NOT cleared the neighborhood of its orbit Is not a satellite

Planet In orbit around the sun Has enough mass that is has a round shape (or almost round) HAS cleared the neighborhood around its orbit Is NOT a satellite

Asteroid Orbits the Sun inside the orbit of Jupiter DOES NOT have sufficient mass for it to maintain a round shape (not as round in looks) HAS NOT cleared the neighborhood around its orbit Is NOT a satellite

Examples 1: Ceres 2: Asteroid Belt 3: Vesta (asteroid or minor planet)

Answer #3 without looking at page 1

Write what each are on your paper NOT Cleared neighborhood Cleared neighborhood Cleared neighborhood NOT Cleared neighborhood

Write what each are on your paper Dwarf Planet Planet Planet Dwarf Planet

Write what each are on your paper NOT Cleared neighborhood Cleared neighborhood Kuiper Belt Ring of ____ that orbit… NOT Cleared neighborhood

Write what each are on your paper Planet Asteroid Ring of small icy bodies Asteroid

#5 Complete the Venn Diagram Asteroid Not enough gravity to make it “round” Orbits Sun inside orbit of Jupiter NO cleared neighborhood NOT satellite Enough gravity to make it “round” CLEARED neighborhood Orbit sun Dwarf Planet Planet

Comparison Chart fill out the following info Between Venus and Mars between Mars & Jupiter Beyond Neptune diameter=12,756Km Shape=ROUND Diameter=960Km Shape=ROUND Mass=5.974x10^24Kg Gravity=1.00 Mass= 8.7x10^20 Kg Gravity=0.0001 3.0x10^20Kg Gravity=0.00005 2.0 g/cm^3 2.0 g/cm^3 Yes Not likely Maybe 30% water ice Mix: rocky core, water ice, thin crust Mix: unknown exact Varied: oceans, tundra, forests, deserts, mountains unknown

Comparison Chart complete the rest of the chart and missing pieces for homework