Chapter 29 The Solar System Final Powerpoint

Chapter 29 The Solar System Final Powerpoint - Chapter 29...

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Chapter 29 The Solar System Chapter 29 The Solar System The Planets
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Overview of Our Solar System Overview of Our Solar System M V E M J S U N P (Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, Pluto) (My Very Energetic Mother Just Sent Us Nine Pizzas.) All planets and their moons (satellites) orbit the Sun in the same direction. All orbits lie in the same plane except Pluto’s orbit.
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Early Ideas Early Ideas Planets slowly change position each night relative to the position of the stars. Geocentric Model – Use to think Earth was the center and sun, stars, & planets orbited us. Planets orbit to the east as viewed from earth, but occasionally move in the opposite direction ( RETROGRADE MOTION ).
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Early Ideas Early Ideas Copernicus suggested that sun is center of solar system (Heliocentric Model) Earth and inner planets, which are closer to sun move faster in orbits and pass up outer planets at certain points in their path making them appear to move backwards.
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Early Ideas Early Ideas Kepler’s First Law = Planets orbit the Sun in an ellipse, not a circle. 1 Astronomical Unit (AU) – average distance between the sun and earth. (1.496 x 108 km) Other planets’ distance from sun is compared to that of the earth.
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Early Ideas Early Ideas Perihelion – point in elliptical orbit when planet is closest to sun. Aphelion – point in elliptical orbit when planet is farthest from sun.
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Early Ideas Early Ideas Galileo first person to use a telescope to observe sky. (Saw 4 largest moons of Jupiter) Newton – studied gravity (attractive force between two bodies that depends on their
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Chapter 29 The Solar System Final Powerpoint - Chapter 29...

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