Topic: Kepler’s Laws
description
Transcript of Topic: Kepler’s Laws
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Topic: Kepler’s Laws
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Revolution Vs. Rotation
• Revolution =
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Revolution Vs. Rotation
• Rotation =
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ESRT pg 15
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Laws of Gravity
• Mass – Greater mass =– As mass increases =>
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• Distance – The closer the objects, the stronger the
gravitational forces.
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Modern Celestial Models• Heliocentric Model could
not explain the movement of all objects, until Johannes Kepler (1609) developed laws of planetary motions
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1st Law __
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EccentricityA number indicating the roundness of
an ellipse.
Eccentricity = Distance Between Foci
Length of Major Axis
e=d/L Page 1 in your BEST FRIEND
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e = 0 e = 1
Perfect circle
Straight line
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ESRT pg 15
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2nd Law__
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Caused by the Sun’s gravitational pull
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3rd Law• __
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ESRT pg 15
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Final Question
• http://www.polleverywhere.com/multiple_choice_polls/OTk2MDQ2MzY2/web