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The Planets!!! A quick guide to the solar system.

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Presentation on theme: "The Planets!!! A quick guide to the solar system."— Presentation transcript:

1 The Planets!!! A quick guide to the solar system

2 The Inner Planets Close to the sun Close to the sun Rocky surfaces Rocky surfaces Considered to be the “terrestrial” planets (meaning like earth) Considered to be the “terrestrial” planets (meaning like earth)MERCURYVENUSEARTHMARS

3 Mercury Closest to the sun Smallest true planet Extremely thin atmosphere (some sodium). Low gravity. Extreme Temperature differences between day and night No moons

4 It was named after Mercury, the swift messenger of the gods in ancient Roman mythology, since it revolves around the sun faster than any other planet. The surface is covered by many craters and ridges as a result of meteorite impacts.

5 Venus 2 nd from the sun. 2 nd from the sun. Considered to be Earth’s twin. Considered to be Earth’s twin. High air pressure High air pressure Retrograde rotation (sun rises in west and sets in the east). Retrograde rotation (sun rises in west and sets in the east). Thick atmosphere made of CO 2. Thick atmosphere made of CO 2.

6 Greenhouse effect keeps the temperature VERY hot!!! (460°C) Greenhouse effect keeps the temperature VERY hot!!! (460°C) Day is longer than year. Day is longer than year. Named after the Roman goddess of love. Named after the Roman goddess of love. Brightest planet in the night sky (called the evening star). Brightest planet in the night sky (called the evening star).

7 Mars The Red Planet. Red because of iron content on surface. Thin atmosphere of CO 2. Temperature closest to Earth’s. Ice caps at both poles.

8 2 moons: Phobos Deimos Has the largest volcano in the solar system (Olympus Mons). Named after the Roman god of war.

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10 The Outer Planets Gas Giants (Atmosphere is primarily gas) JUPITER SATURN URANUS NEPTUNE

11 Jupiter Largest planet Largest planet 300x the mass of Earth. 300x the mass of Earth. Strongest gravity Strongest gravity Atmosphere similar to the sun (hydrogen and helium) Atmosphere similar to the sun (hydrogen and helium) Considered to be a brown star. Considered to be a brown star. Named after Zeus (Jupiter in Roman Mythology). Named after Zeus (Jupiter in Roman Mythology).

12 Has 4 large moons: Has 4 large moons: Europa, Callisto, Ganymede, and Io Europa, Callisto, Ganymede, and Io Solid core of rock, ice, and frozen CO2. Solid core of rock, ice, and frozen CO2. Has one ring. Has one ring. The great red spot (lg. hurricane like storm). The great red spot (lg. hurricane like storm).

13 Saturn Hundreds of rings. Made of ice, dust, and chunks of rock 30 moons (largest = Titan). Atmosphere is similar to Jupiter (hydrogen and helium). Density is less than 1 (will float on water). Named after Saturnus, the Titan father of Zeus.

14 Uranus Has Rings Has Rings Rotates on its side. Rotates on its side. Bluish in color because of methane in atmosphere. Bluish in color because of methane in atmosphere. 20 moons. 20 moons. Most mispronounced planet. Most mispronounced planet. Discovered in 1781 by William Hershel. Discovered in 1781 by William Hershel. Named after the Greek god of the sky. Named after the Greek god of the sky.

15 Neptune Discovered shortly after Uranus due to irregularities in Uranus’ orbit. Methane part of atmosphere (makes it blue). Has visible clouds. Named after Roman god of the sea b/c of its blue color.

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17 The Dwarf Planets (New additions and demotions) A dwarf planet is an object that orbits the sun, and is nearly round, but is not a satellite of another object, and has not "cleared the neighborhood" of its own orbit.

18 Pluto The planet that was Rocky Rocky Discovered in 1930 Discovered in 1930 Very odd elliptical orbit. Very odd elliptical orbit. Switches places with Neptune as furthest planet. Switches places with Neptune as furthest planet. Has not cleared its orbit (the Kuiper Belt). Has not cleared its orbit (the Kuiper Belt). Named after the Roman god of the underworld. Named after the Roman god of the underworld. Has one moon: Charon Has one moon: Charon

19 Ceres The former asteroid Used to be considered one of the largest asteroids in the asteroid belt. Found between Jupiter and Mars Named after the Roman goddess of growing plants, the harvest, and of motherly love. Was found to be more spherical than other asteroids. Period of Rotation:.38 days Period of revolution: 4.6 yrs. No moons

20 Eris The 10th planet Sometimes called Xena. Sometimes called Xena. Beyond Pluto Beyond Pluto Larger than Pluto Larger than Pluto The largest dwarf planet. The largest dwarf planet. Period of Revolution: 557 years. Period of Revolution: 557 years. One moon: Dysnomia One moon: Dysnomia A dwarf planet because of its odd orbit around the sun. A dwarf planet because of its odd orbit around the sun.

21 New dwarf planets are being considered and discovered. Who knows what we will consider a part of our solar system in the coming years.


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