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Chapter 27.4 The Outer Planets Std. 1a- Students know how the differences and similarities among the sun, the terrestrial planets, and the gas planets.

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Presentation on theme: "Chapter 27.4 The Outer Planets Std. 1a- Students know how the differences and similarities among the sun, the terrestrial planets, and the gas planets."— Presentation transcript:

1 Chapter 27.4 The Outer Planets Std. 1a- Students know how the differences and similarities among the sun, the terrestrial planets, and the gas planets may have been established during the formation of the solar system Objective 1: Identify the differences between the outer planets and the terrestrial planets Objective 2: Compare the characteristics of the outer planets Objective 3: Explain why Pluto is different from the other 8 planets

2 The Outer Planets The 5 Planets farthest from the sun are: 5) Jupiter 6) Saturn 7) Uranus 8) Neptune 9) Pluto Asteroid belt - A ring of debris that separates the inner and outer planets

3 Gas Giants Gas giants are much larger than terrestrial planets (much less dense) Thick atmosphere = mostly hydrogen and helium Cores = rock and metal All four gas giants have ring systems made of dust and ice debris

4 Jupiter 5 th planet from the sun Largest planet 300x larger than Earth Orbits the sun every 12 years Rotates every 9hrs 50 min. (fastest) At least 60 moons Several thin rings

5 Jupiter’s Atmosphere Hydrogen and helium makes up 92% of the atmosphere Rapid rotation causes gases to swirl around the planet and form bands – Great Red Spot – giant storm Average temperature -160 ° C

6 Jupiter’s interior Jupiter’s interior has higher temperature and pressure than Earth’s interior Interior is a liquid (metallic hydrogen) surrounding a solid, rocky, iron core

7 Objective 1: Identify the differences between the outer planets and the terrestrial planets What is the ring of debris that separates the inner and outer planets? – Asteroid Belt Gas giants atmosphere’s are made of mostly… – Hydrogen and Helium What is the name of the storm on Jupiter? – Great Red Spot What do gas giants have that terrestrial planets don’t? – Rings

8 Saturn 6 th planet from the sun Orbital period is 29.5 years Cloud temperature -176 ° C At least 30 moons, Titan (largest moon) is half the size of Earth Made of hydrogen & helium (rocky iron core)

9 Saturn’s rings Most complex system of rings of all the gas giants – made of billions of ice and dust particles – Rotates every 10h 30 min Fast rotating & low density causes Saturn to bulge at the equator

10 Uranus 7 th planet from the sun 3 billion km away (difficult to study ) 24 moons 11 thin rings Orbits every 84 yrs

11 Uranus rotation Axis is parallel to the plane of it’s orbit – Most planets rotate perpendicular Rotates every 17 hrs. Atmosphere - hydrogen & helium Blue/green color indicates presence of methane -214 °C core of rock and melted elements

12 Neptune 8 th planet Same size and mass as Uranus Orbital period is nearly 164 years Rotates every 16 hrs. Has at least 8 moons & possibly 4 rings

13 Neptune’s Atmosphere Consists of hydrogen, helium & methane Solar systems strongest wind > 1,000 km/h The Great Dark Spot is a storm as big as Earth Cloud temperature = -225°C

14 Objective 2: Compare the characteristics of the outer planets What are Saturn’s rings made of? – Billions of dust and particles What is the name of the storm on Neptune? – The Great Dark Spot What’s unique about Uranus’s rotation? – It rotates almost parallel to the plane of it’s orbit What gives Uranus’s it’s blue/green color? – Methane

15 Pluto Dwarf planet Elongated orbit (sometimes in Neptune’s orbit) Made of frozen methane, rock & ice Very different than the gas giants (may not be an actual planet)

16 Objects Beyond Pluto Kuiper Belt - A region of the solar system beyond Neptune’s orbit which contains small bodies made of ice – Pluto may be the largest body of the Kuiper Belt

17 Exoplanets Exoplanets - planets that orbit other stars They DO NOT orbit the sun in our solar system

18 Objective 3: Explain why Pluto is different from the other 8 planets What makes up Pluto? – Frozen methane, rock and ice Why is Pluto not considered an actual planet? – Very different than the gas giants Pluto may be the largest body of the… – The Kuiper Belt What are planets that orbit other stars? – Exoplanets


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