Kepler’s laws of planetary motion

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Presentation transcript:

Kepler’s laws of planetary motion 11/14/16 Kepler’s laws of planetary motion Objective: I will summarize Kepler’s three laws of planetary motion.

Kepler’s 1st Law- Law of Ellipses Each planet orbits the sun in a path called an ellipse, not a circle Shape of the ellipse determined by two points, called a focus Eccentricity- degree of elongation of an elliptical orbit Circular e=0 Flattened ellipse e=1 Perihelion- point of orbit closest to the sun Aphelion- point of orbit furthest away

Kepler’s 1st Law- Law of Ellipses

Kepler’s 2nd Law- Law of Equal Areas The areas through which an object sweeps in a given period of time are equal Describes the speed objects travel at different points in their orbit Objects travel fastest when close to the sun, and slowest when far away from the sun

Kepler’s 2nd Law- Law of Equal Areas

Kepler’s 3rd Law- Law of Periods Describes the relationship between the average distance of a planet from the sun and the planet’s orbital period Orbital period- time required for planet to complete one orbit Helps astronomers find out how far away planets are from the sun

Kepler’s 3rd Law- Law of Periods

Kepler’s Laws Notes Read pages 692-693 Take notes on page 35 of your Interactive Notebook Title: Kepler’s Laws Objective: I will describe Kepler’s 3 Laws of Planetary Motion.

Kepler’s Laws Haiku (Output Activity) On your left-side page, you will create three (3) separate Haiku poems. One poem each for: Kepler’s 1st Law Kepler’s 2nd Law Kepler’s 3rd Law Remember to include a title and color!

Haiku Output Activity