1. 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.

2. 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

3. Kepler’s 1st Law- Law of Ellipses

4. 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

5. Kepler’s 2nd Law- Law of Equal Areas

6. 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

7. Kepler’s 3rd Law- Law of Periods

8. 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.

9. 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!

10. Haiku Output Activity