“The Solar System” 23.1.

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Presentation transcript:

“The Solar System” 23.1

X (you are here)

Where are We? Earth = one of 8 planets Earth Revolves around the Sun Sun + Planets = Solar System

Where did Earth Come From?... Mars

Nebular Hypothesis. Everything in Solar System came from a HUGE, spinning, cloud of dust & gas. Hypothesis?... Nebula?... “Nebula” = Cloud of dust & gas in Space

Nebular Hypothesis: Nebula spun really fast Flattened Dust squishes together in middle Forms SUN Other Solids squish together and form planets

1. Nebula 2. Spins… 3. Sun! 4. Planets!

Now What?...

“My Very Elegant Mother Just Bought Us Nine Pizzas”

Poor Pluto…

Types of Planets Terrestrial Jovian BIG. Big Difference = SIZE Mercury, Venus, Earth, Mars Jovian Jupiter, Saturn, Uranus, Neptune Rocks & Metals! Small. Gas & Ice! BIG. Big Difference = SIZE

Terrestrial Planets Jovian Planets More Dense! Less Dense. Thin Atm. Thick Atm! Terrestrial Planets Jovian Planets Larger. More Gravity. “Pulls” gasses.

11 km/sec 25,000 mph Escape Velocity Speed an object must travel to break free of a planet’s gravitational pull.

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Densest? Largest? Most gravity? Thickest Atm?

Taboo. Directions: One person is “coach.” Coach tries to get others in group to say the word. Coach gives clues, but cannot say the words in the list. Person with most points wins. Everyone else gives this person their lunch money.