2 I. Inner (Terrestrial) Planets - Mercury, Venus, Earth, and Mars. Aim: What are some of the characteristics of the planets of our solar system?I. Inner (Terrestrial) Planets - Mercury, Venus, Earth, and Mars.MercuryClosest to the sunOrbits the sun in 88 daysCompletes one rotation in 59 days
3 Temperature of 400oC in day and -200oC at night Has many craters like the moonVery eccentric orbit
6 B. Venus – very similar to the Earth in diameter, mass, and gravity. Rotates east to west (only planet that rotates in this direction)Atmosphere of mostly CO2Greenhouse Effect - CO2 keeps heat from escapingSurface temperature reaches a high of 460oCHas winds that travel up to 300 km/hr
9 C. Mars (Has 2 moons)687 days to orbit SunIt has half the diameter and gravity of the EarthIt has a similar tilt as the Earth, thus . . .?It has 4 seasons like the earth!!It has a high temperature of 27oC and a low temperature of -125oC.It has a thin atmosphere of mostly CO2
10 Has frozen polar ice caps of CO2 and some water Olympus Mons – large shield volcano km across and 25 km high.
12 Composed mainly of Hydrogen (H) and Helium (He). II. Outer (Jovian) Planets – Jupiter, Saturn, Uranus, and Neptune.A.. Very large planets. Uranus is the smallest of these planets, but is still 15x larger than Earth!Gas PlanetsComposed mainly of Hydrogen (H) and Helium (He).
14 Jupiter’s Ring All have Ring systems Individual particles that orbit planetsCloser to planet than the moonsCentered over the equator of the planetJupiter’s Ring
15 F. JupiterOrbits the sun in 12 years and completes one rotation in 9.8 hoursHas twice the total mass of all other planets ‘ masses combinedComposed of 90% hydrogen and 10% helium surrounding small iron, rock, and water core.Dark and light bands are wind streams“Great Red Spot” – storm that is larger than the Earth across.
16 6. Has at least 16 moons. Largest ones that were discovered by Galileo 6. Has at least 16 moons. Largest ones that were discovered by Galileo. Named Io, Europa, Ganymede, and Callisto.
18 G. SaturnOrbits the sun in 30 years and completes one rotation in 10.2 hoursWind speed at the equator reaches 1800 km/hr.Very low density (0.7 g/cm3). Can float in water!Spectacular ring system is composed primarily of water and ice.At least 18 moons. Titan is largest moon.
20 H. UranusTakes 84 years to orbit sun once and rotates once in 17.3 hours.Avg. surface temp. is –200oCIt’s axis is completely tipped over with it’s south pole pointing towards the sun.Its atmosphere is made up of hydrogen and methane. The methane gives it its blue color.Rock, iron core surrounded by water and hydrogen gas.
22 I. NeptuneOrbits the sun in 165 years and rotates on its axis in 16 hours.Outermost of large planets that has 6 moons“Great Dark Spot” – large storm similar to Jupiter’s. 30,000 km across.Wind speeds of up to 1300 miles/hr.8 moons
24 J. Pluto Very elliptical orbit and may even pass Neptune in its orbit Orbits the sun in over 200 years and rotates once every 6 days.Has one moon (Charon)Made up of water, rock, and ice.Temperature of about –387oCThin methane atmosphere