4. The diagram below represents the path of the Earth’s orbit around the sun compared to the path of the orbit of a comet around the sun. Which statement concerning the diagram is probably true? (1) A comet has a less eccentric orbit and a shorter period of revolution than the Earth. (2) A comet has a more eccentric orbit and a shorter period of revolution than the Earth. (3) A comet has a less eccentric orbit and a longer period of revolution than the Earth. (4) A comet has a more eccentric orbit and a longer period of revolution than the Earth.

5. f1f1 f2f2 f1f1 f2f2 f1f1 f2f2 f Increasing eccentricity

6. Mercury =.206 Venus =.007

7. E = d / l d = 1.4 cm l = 4.0 cm E = 1.4 cm / 4.0 cm E = 0.35 = 0.350

8. f1f1 f2f2 The diagram represents a moon in revolution /orbit around a planet. Where will the planet be located? P State one fact about this moon at its current position