1 / 7

Kepler’s Laws

Kepler’s Laws. A word on vocab The laws Third law in motion. A word of Vocab. Ellipse locus of points on a plane where the sum of the distances from any point on the curve to two fixed points is constant Focus (foci) Counterpoints of an ellipse Semi-major axis

dahlia-rice
Download Presentation

Kepler’s Laws

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Kepler’s Laws A word on vocab The laws Third law in motion

  2. A word of Vocab • Ellipse • locus of points on a plane where the sum of the distances from any point on the curve to two fixed points is constant • Focus (foci) • Counterpoints of an ellipse • Semi-major axis • Average of the distance from any point on the ellipse to the foci

  3. Kepler’s First Law • Planets orbits are elliptical with the sun at one foci

  4. Kepler’s Second Law • A line from the sun sweeps over equal area in equal time intervals. • Telling us that planets mover faster as they get closer to the sun. • Area a=Area b = Area c

  5. Kepler’s Third Law • The square of a planet’s Period of revolution (p) is equal to the cube of the planet’s average distance to the sun (semi major axis) (a) • Or p2 = a3 • Semi major axis is measured in astronomical units (AU) • The earth is 1 AU from the sun

  6. Planet Data see also pg 645

  7. 3rd Law put to use • Earth: • Period of revolution (P) = 1 year • Semi major axis (a) = 1 AU • p2 = a3 ? • 1=1 • Mars: • Period of revolution (P) = 1.881 years • Semi major axis (a) = 1.524 Au • p2 = a3 ? • 3.54 = 3.54

More Related