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Transcript
Chapter 2 The Earth Our Solar System • Center is the Sun 8 planets Earth is the 3rd away from the sun Sun Jupiter is the biggest All the planets except for Mercury and Venus have moons Saturn has 18 moons Saturn Jupiter Moon Terrestrial Planets • Planets that have solid, rocky crusts • Mercury, Venus, Earth, and Mars • Earth - only one with water on the surface and can support life Mercury Venus Mars Gas Giant Planets • Jupiter, Saturn, Uranus, and Neptune • Larger than terrestrial Jupiter planets • More gaseous and less dense Uranus Saturn Neptune Asteroids, Comets, and Meteoroids • Asteroids - small, irregularly shaped, planetlike objects. Found mainly between Mars and Jupiter • Comets - made of icy dust and frozen gases • Meteoroids - pieces of space debris (rock and iron). Usually burn before they reach earth Asteroid Comet Meteoroids Pluto? • a planet must: orbit the Sun, have sufficient mass to assume a nearly round shape, and have cleared the neighborhood around its orbit. • Pluto does not meet the last requirement
