InThinking Subject Sites

Subscription websites for IB teachers & their classes

Find out more


Sitemap
Recommendations
Other subjects
Brochure

Disclaimer: InThinking subject sites are neither endorsed by nor connected with the International Baccalaureate Organisation.

Student access tools
 You need to log-in or subscribe in order to use Student access.

D1 PBL: Orbits

(1) All planets move about the Sun in elliptical orbits, having the Sun as one of the foci.(2) A radius vector joining any planet to the Sun sweeps out equal areas in equal lengths of time.(3) The squares of the sidereal periods (of revolution) of the planets are directly proportional to the cubes of their mean distances from the Sun.A mass is made to travel in a circle on the end of an elastic string.

To access the entire contents of this site, you need to log in or subscribe to it.

Alternatively, you can request a one month free trial.