The Solar The Solar SystemSystem

Planets and Planets and their sizestheir sizes

The PlanetsThe PlanetsMercury, Venus, Earth, and MarsMercury, Venus, Earth, and Mars

Inner planetsInner planets – nearest to the sun – nearest to the sunTerrestrial Terrestrial planetsplanets – have solid, rocky crusts – have solid, rocky crusts

Jupiter, Saturn, Uranus, NeptuneJupiter, Saturn, Uranus, NeptuneOuter planetsOuter planets – farthest from sun – farthest from sunGGas Giant Planetsas Giant Planets – more gaseous & less dense – more gaseous & less dense

LLargestargest – Jupiter – JupiterSmallestSmallest – was Pluto, now Mercury – was Pluto, now Mercury

Earth is the 5Earth is the 5thth largest largest

Planet Inner or Outer?

Size # of Moons

Terrestrial/Gas Giant

Mercury Inner 3,032 mi Zero Terrestrial – scalding hot

Venus Inner 7,521 mi Zero Terrestrial – scalding hot

Earth Inner-3rd planet

from the sun

- about 93 million miles

away

7,926 mi One Terrestrial – has liquid water at the surface and can support varieties of life

Mars Inner 4,218 mi Two Terrestrial – cold, barren desert

Jupiter Outer Largest - 88,694 mi

62 Gas Giant

Saturn Outer 74,586 mi 33 Gas Giant

Uranus Outer 31,784 mi 27 Gas Giant

Neptune Outer 30,832 mi 13 Gas Giant

Planet Inner or Outer?

Size # of Moons

Terrestrial/ Gas Giant

Asteroids, Comets, MeteoroidsAsteroids, Comets, MeteoroidsAsteroidsAsteroids: small, irregularly shaped, : small, irregularly shaped,

planetlike objects; mainly found between planetlike objects; mainly found between Mars and Jupiter in Mars and Jupiter in asteroid beltasteroid belt; a few ; a few follow paths that cross the Earth’s orbitfollow paths that cross the Earth’s orbit

CometsComets: made of icy dust particles and : made of icy dust particles and frozen gases; look like bright balls with frozen gases; look like bright balls with long, feathery tailslong, feathery tails

MeteoroidsMeteoroids: pieces of space debris: pieces of space debris

WaterWater, , LandLand, and , and AirAirOceans, lakes, Oceans, lakes,

rivers, and other rivers, and other bodies of water bodies of water make up the make up the HydrosphereHydrosphere

About 70% of our About 70% of our earth is waterearth is water

LithosphereLithosphere - Land - Land makes up the makes up the part of this part of this earth earth

- includes the - includes the ocean basins ocean basins (land (land beneath the beneath the oceans)oceans)

WaterWater, , LandLand, and , and AirAir

AtmosphereAtmosphere ~ ~ The The air we breathe air we breathe

- 6,000 miles above - 6,000 miles above earth’s surfaceearth’s surface

WaterWater, , LandLand, and , and AirAir

BiosphereBiosphere: : part of part of earth that earth that supports supports lifelife

WaterWater, , LandLand, and , and AirAir

LandformsLandforms7 continents7 continents

Continent QuizContinent Quiz