Planet A most likely represents a Earth b Venus c Saturn d Uranus Do Now Regents Question Planet Revolution Planets in our solar system revolve around the sun in elliptical orbits ID: 272359
Download Presentation The PPT/PDF document "The accompanying diagram represents two ..." is the property of its rightful owner. Permission is granted to download and print the materials on this web site for personal, non-commercial use only, and to display it on your personal computer provided you do not modify the materials and that you retain all copyright notices contained in the materials. By downloading content from our website, you accept the terms of this agreement.
Slide1
The accompanying diagram represents two planets in our solar system drawn to scale, Jupiter and Planet A.
Planet A most likely represents
a) Earth b) Venus c) Saturn d) Uranus
Do Now – Regents QuestionSlide2
Planet Revolution
Planets in our solar system
revolve around the sun in
elliptical
orbits. Slide3
All
objects (planets, asteroids, etc)
have different orbits with different shaped ellipses. Some ellipses are more “flattened” than others. Slide4
Circular Orbit
Elliptical Orbit
Very Elliptical OrbitSlide5
Eccentricity
Eccentricity
– the degree of flattening or “
ovalness
” of an ellipse.
Eccentricity is represented by numbers using a specific formula.
Values
of eccentricity can only be between 0 and 1. Slide6
Ellipses are more
eccentric
than circles! Ellipses can be thought of as eccentric (weird) circles.
Circles have low eccentricities (closer to 0)
Ellipses have high eccentricities (closer to 1)Slide7
High or Low Eccentricity?Slide8
High or Low Eccentricity?Slide9
High or Low Eccentricity?Slide10
High or Low Eccentricity?Slide11
High or Low Eccentricity?Slide12
High or Low Eccentricity?Slide13
Calculating Eccentricity
The major axis is in red.
The foci are the dots in black. Slide14