Kepler's laws of motion
Download as PPT, PDF0 likes1,972 views
Kepler's laws describe the motion of planets: 1) Planets orbit the Sun in ellipses with the Sun at one focus. 2) As planets travel, they sweep out equal areas in equal times. 3) The closer a planet is to the Sun, the shorter its orbital period. Kepler determined that planetary orbits and distances are explained by elliptical geometry rather than perfect circles.
1 of 7
Downloaded 65 times
More Related Content
Ad
Viewers also liked (20)
Ad
Similar to Kepler's laws of motion (20)
More from dwinter1 (20)
Kepler's laws of motion
- 1. Johannas Kepler Planetary Orbital Laws
- 2. Kepler’s First Law The orbit of the planets are ellipses , with the sun at one focus of the ellipse.
- 3. Ellipses and Eccentricity The amount of flattening of the ellipse is termed the eccentricity. Circle = 0 Straight Line = 1
- 4. Ellipses The sun is not at the center of the ellipse. There is nothing at the other focus.
- 5. Kepler’s Second Law The line joining the planet to the Sun sweeps out equal areas in equal times as the planet travels around the ellipse. Good Example Perihelion = Point closest to Sun (fastest) Aphelion = Point farthest from Sun (Slowest)
- 6. Astronomical Distances An Astronomical Unit (AU) is the average distance between Earth and the Sun. Used when measuring distances to other solar system objects. A Light year is the distance it takes light to travel in 1 year. Used to measure distances to other stars and galaxies.
- 7. Kepler’s Third Law The closer the object is to the Sun the faster its period of revolution. Example: Earth & Mars Orbit