2 The Sun Our Solar System’s Star Current Age- 5 Billions years old Life Time Expectancy- 10 Billions years99.8 % of our solar systems total mass.108 Earth fit across the diameter
3 Mercury 1st Planet 58,000,000km Rotation 59 Earth days Revolution 88 Earth DaysSolid, rocky, surface.-173C to 427CVery crateredVery thin atmosphere- Sodium and other Elements.No MoonFactoids: Very hard to get a good view, has an extreme temperature range.
4 Venus 2nd Planet 108,000,000km Rotation Period- 243 Earth Days Retrograde rotation- rotates east to west.Revolution Period- 225 Earth DaysA solid, rocky, cratered surface with volcanoes.460ºC hot enough to melt lead.Greenhouse effect- traps heat in the atmosphere, due to Carbon Dioxide.Very thick atmosphere, cloud covered.No Moon
5 Earth 3rd Planet 150,000,000 km Rotation 24 Earth hours Revolution Earth DaysSolid, rocky, surface, 71% liquid water-88°C to 58°CAtmosphere- nitrogen and oxygenOne natural satellite - MoonFactoids: living beings and all that is needed to sustain life
6 Mars 4th Planet 228,000,000km Rotation 1.03 Earth Days Revolution- 687 Earth DaysSolid, rocky, surface. (the red planet)-87°C to -5°COnce believed there were canals.Has ice caps (made of frozen carbon dioxide andwater.)Has seasons. (dust storms)Very thin atmosphere- mostly carbon dioxide2 Moons-Phobos and Deimos
7 Asteroid Belt Between Mars and Jupiter. Over 10,000 Too small and numerous to be planets.Ceres is a dwarf planetAn asteroid might have made the dinosaurs extinct.
8 Jupiter 5th Planet 778,000,000km Rotation .41 Earth Days Revolution 12 Earth YearsGas giant, No Solid Surface- gravity keeps gases inx 1027 kg300 times more massive than Earthsolid core of rock and iceVery dense atmosphere- hydrogen and heliumGreat Red Spot (giant hurricane – fit 3 Earths)Moons: 62 (Io, Ganymede, Calisto, Europa)
9 Saturn 6th Planet 1,427,000,000km Rotation .43 Earth Days Revolution 29 Earth YearsGas giant, No Solid Surfacex 1026 kgsolid core of rock and iceless dense than waterVery dense atmosphere- hydrogen and helium1000’s of rings (made of rock and ice)Moons: 60 (Titan)
10 Uranus 7th Planet 2,871,000,000km Rotation .72 Earth Days Revolution 84 Earth YearsGas giant, No Solid Surfacex 1025 kgsolid core of rock and icerotates on its sideVery dense atmosphere- traces of methaneThin rings (made of rock and ice)Moons: 27
11 Neptune 8th Planet 4,479,000,000km (30 Earth’s) Rotation .67 Earth DaysRevolution 165 Earth YearsGas giant (gravity keeps gases in)x 1026 kgsolid core of rock and icefound by a mathematicianVery dense atmosphere- traces of methaneThe Great Dark Spot (Didn’t last long)Thin rings (made of rock and ice)Moons: 13 (Triton)
12 Which of the following statements correctly describes the planets of our solar system?A. Saturn is the farthest planet from the sun.B. Mercury takes the shortest amount oftime to revolve around the sun.C. Venus is the 5th planet from the sun.D. Mars takes less time to revolve around thesun than the Earth.
13 Which of the following statements correctly describes the Planets of oursolar system?The outer planets have rocky surfaces with cores of gas.The rocky surface of Venus is covered with ice.The inner 4 planets have rocky surfaces while the outer planets are gaseous.Jupiter is the smallest of the Outer Planets.
14 Comet “Dirty snowballs” Spherical chunks of ice, rock and dust Tens of thousands of Kilometers acrossVery long and elliptical orbitsSun melts the ice into gas and forms a tail.Solar wind pushes tail away from the sun.Halley’s comet- Every 76 Years (2062)
15 Parts of a Comet 2.Nucleus- Central part of a comet. 3.Tail- gas and dust, pushed away from the sun due to solar wind.1.Coma- gas and dust from the inner layer.
16 Asteroids & Meteoroids Asteroids and meteoroids are irregularly-shaped chunks of rock in space.Asteroids are usually around a kilometer in size.Meteoroids are smaller than asteroids.Meteoroids usually form from a comet or asteroid.
17 MeteorMeteors are small meteoroids enter the Earth’s atmosphere and burn up entirely.Meteoroids burn due to the friction with the atmosphere.Meteors appear as a streak of light.Meteors are referred to as Shooting Stars.
18 MeteoritesMeteoroids that are too big to burn up completely as the pass through the atmosphere.Meteorites survive entry and hit the Earth’s surface.
19 Celestial body # 1 is most likely which of the following? A. a star CHARACTERISTICS OF SOME CELESTIAL BODIESCelestial body # 1 is most likely which of the following?A. a starB. an asteroidC. a cometD. a planetCelestial BodyShapeDiameterComposition1Spherical12,000 KmRock, Dust, & Ice2Irregular1 KmRock and Metal31 Million KmGlowing Gas