our solar system a system of eight planets and many other objects that orbit our sun
TRANSCRIPT
Our Solar SystemOur Solar System
A system of eight planets and many other A system of eight planets and many other objects that orbit our sunobjects that orbit our sun
Inner PlanetsInner PlanetsThe 4 solid, rocky planets closest to the The 4 solid, rocky planets closest to the
sun; Mercury, Venus, Earth, Marssun; Mercury, Venus, Earth, Mars
Mercury – 1st planet, moon-like appearance, 4500C during the day, -1750C at night
Venus – 2nd planet, Earth-like, dense CO2 atmosphere, 4640C avg. temperature
Inner Planets (cont.)Inner Planets (cont.)Earth – 3Earth – 3rdrd planet, 150 planet, 150
million km from the sun, million km from the sun, or 1 astronomical unit or 1 astronomical unit (AU)(AU)
Mars – 4th planet, red iron-oxide surface
Outer PlanetsOuter PlanetsThe 4 planets farthest from the sun; Jupiter, The 4 planets farthest from the sun; Jupiter,
Saturn, Uranus, and NeptuneSaturn, Uranus, and NeptuneJupiter – 5th planet,
largest in solar system, gas planet composed of
liquid hydrogen, helium & some ammonia, methane
& water vapor
Saturn – 6th planet, ringed gas planet with the lowest
density
Outer Planets (cont.)Outer Planets (cont.)
Uranus – 7Uranus – 7thth planet, gas planet, gas planet with rotation axis planet with rotation axis
almost parallel to its almost parallel to its revolution planerevolution plane
Neptune – 8th planet, gas planet similar to Uranus with methane gas giving
the blue color
Solar System TermsSolar System TermsSphere – a round, three-dimensional object Sphere – a round, three-dimensional object
whose surface at all points is the same distance whose surface at all points is the same distance from its centerfrom its center
Axis – an imaginary line around which an object Axis – an imaginary line around which an object spinsspins
Solar System Terms (cont.)Solar System Terms (cont.)
Rotation – the spinning of an object around its axisRotation – the spinning of an object around its axis
Revolution – the orbiting of one object around Revolution – the orbiting of one object around another, like Earth revolving around the sunanother, like Earth revolving around the sun
Ellipse – an elongated, closed curve; the shape of Ellipse – an elongated, closed curve; the shape of planetary orbitsplanetary orbits