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Row 1, Col 1 Planets Mercury, Venus, Earth, and Mars are called (Terrestrial Planets.)

1,2 Planets Jupiter, Saturn, Uranus, and Neptune are called ____ ( gas planets )

1,3 - Dwarf Planet -rocky surrounded by water ice -Surface has methane and nitrogen moons Charon, Nix, Hydra -Icy and Rocky -Crosses other planets path for 20 years --Rotation retrograde (East to west) -Located at beginning of Kuiper belt ( Pluto)

1,4 A massive object orbiting a star Like sun and has cleared neighborhood Around its orbit and has enough Mass to form spherical shape. (Planet)

2,1 Ancient system for classifying that -Planets and moon orbit earth -Earth at the center of the planets. ( Geocentric system )

2,2 Copernicus system for classifying that : Earth and the other planets orbit the sun Sun is at the center of planet Evidence: Moons of Jupiter Phases of Venus ( Heliocentric )

2,3 The spinning of Earth on its axis that causes day and night is called… ( Rotation )

2,4 The movement of one object around another in an orbit that completes a year is called… (Revolution)

3,1 Backward rotation of planets Venus,Uranus,and dwarf planet Pluto from East to West is called… (Retrograde Rotation)

3,2 -Irregular Shaped, cratered -Orbit sun between Jupiter and Mars -Rotate erratically -Too small to be considered planet -Carbonaceous, Silicaneous Metallic (Asteroids.)

3,3 -Long haired objects -Appear from beyond Neptune --Chunks of ice and dust -Size of mountain -Nucleus, coma, tail -Very long narrow ellipse (Comet)

3,4 Origin from asteroids, Comets -Look like stones -Mostly Nickel and heavy for size -Shooting stars -Travel through space (Meteors)

4,1 -Rocky, craters -Almost no atmosphere (trace of Sodium) -Moves quickly -Extreme variation in temperature (Mercury)

4,2 -Thick toxic atmosphere of CO2 With clouds of sulfuric acid -Rocky bright planet in evening sky -Closest to Earth in size, gravity, rock composition -Retrograde Rotation(backward) East to West -Greenhouse effect, -Active volcanoes (Venus)

4,3 -blue, solid, rocky -has life and water -has seasons because its axis is tilted at 23.5 degrees from vertical (Earth)

4,4 Two moons:Phobos, Deimos -Red rocky planet -Red dust windstorms -Seasons -Temperature below zero most times -Polar ice caps (Frozen water and CO 2) -Volcanoes and canyons -Thin atmosphere mostly CO 2 -Evidence of flowing water (Mars)

5,1 -Largest planet -Atmospheric pressure very high -Hydrogen, Helium, Methane, Ammonia -density only 1.3 g/cm3 -around 64 moons (Io, Europa) -Massive with colorful bands -Great Red spot: massive storm -Moon Europa may support life (Jupiter)

5,2 -Atmosphere mostly Hydrogen and Helium -around 60 moons (Titan) -Thousands of beautiful rings -Rings made of ice,rock -least dense planet -planetary storms -Titan its moon has nitrogen, and pressure like Earth (Hope for life) (Saturn.)

5,3 -Atmosphere mostly Hydrogen, Helium, Trace of ammonia, water -About 27 moons (Oberon, Titania) -Axis 90 degrees off vertical -Retrograde Rotation (Top to bottom) -Ice giant -Magnetic field tipped over -Two sets of rings (Uranus)

5,4 -atmosphere contains visible clouds -13 moons (Triton) -Vivid brighter blue -Dark, cold, whipped by supersonic winds -Great dark spot (Storm) Six rings -located through math prediction -orbit nearly perfect circle -Orbit furthest for 20 years (Neptune)