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Solar System

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scott bushong

on 16 February 2015

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Transcript of Solar System

Our Solar System
The Sun
Inner Planet Facts
Mercury, Venus, Earth and Mars
All 4 are Small & dense
They have Rocky surfaces
“terrestrial” planets= Earth-like
Solid surfaces
All have an atmosphere (except Mercury)

Smallest & closest to the sun
About the size of Earth’s moon

Flat plains & craters on the surface
Virtually no atmosphere
Small mass = weak gravity
Side facing sun very hot; side away very cold
Ability to support life?

Mercury Facts
Venus Facts
Called “Earth’s twin” because of similar size & mass
Thick atmosphere; always cloudy
You would be crushed by the weight of the atmosphere
Mostly carbon dioxide (CO2)
Unusual rotation east to west (opposite of Earth)
Its Day longer than it’s year
(243 Earth days for a day, and 225 days for a year)
Hottest planet in solar system (864 degrees F)
Surface is covered in rock, volcanoes
Ability to support life?

Earth Facts
Only planet where you could live easily
Liquid water
Suitable temperature ranges
Just right; if closer to sun water would evaporate,
if further away it would be ice
Enough gravity to hold on to most gases
Greenhouse effect like Venus

“Red Planet”: iron oxide (rust) in rocks

Water located at the planets 2 polar ice caps
Large ice deposits just under surface

Atmosphere is 95% carbon dioxide
Very thin
Volcanoes: Olympus Mons largest in solar system
2 Moons: Phobos & Deimos
Ability to support life?

An averaged sized star
Largest and central object in our solar system
(Heliocentric) >99% of the total mass of S.System
Produces its own energy through Nuclear Fusion where Hydrogen is smashed into Helium
Jupiter, Saturn, Uranus & Neptune
Common Features:
Larger & more massive than inner planets
No solid surfaces “gas giants”
Strong gravitational force (keeps gases from escaping & forms thick atmospheres)
Extremely cold because so far from sun
All have many moons
All are surrounded by a set of rings

Outer Planets
Largest & most massive planet
Thick atmosphere of (hydrogen & helium)

Great Red Spot
A storm larger than Earth; swirling winds similar to a hurricane (shows no signs of going away)
Dense rock core & liquid H & He surround it
Largest Moons
Ganymede, Callisto, Io, Europa
(see pg 253)

2nd largest planet
Thick atmosphere like Jupiter made of (hydrogen & helium)

Also contains clouds & storms

Ringed Planet
”: made of chunks of rock & ice in it’s own orbit around Saturn; broad & thin
is the largest moon; only moon with a thick atmosphere (see pg 254 & 255)
Lowest density of any planet; could float in bathtub!

Blue-green color because of methane gas in atmosphere
Thin, flat rings
5 largest moons have icy, cratered surfaces
Lava flows on their surface; at least 27 moons!
Axis is tilted at an angle of 90 degrees (see pg 256)
Rotates top to bottom

Mr. Bushong
Similar in size & color to Uranus
Atmosphere contains visible clouds
Interior is hot due to energy left over from formation; as energy rises it produces clouds & storms
Great Dark Spot (1989); gone 5 years later
At least 13 moons;
largest is Triton
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