Sketch a diagram to show the highly elliptical orbital path of a comet around the Sun. Mark the position of the Sun on your diagram using the letter SSS.
Draw a cross on your diagram to show where the comet is travelling with its fastest speed. Label this cross FFF.
Explain, in terms of the conservation of energy, why the speed of the comet increases as it travels closer to the Sun.
100 exam-style questions on CIE IGCSE Physics 6.1 The Earth and the Solar System, covering 6.1.1a Rotation of the Earth, the seasons and the Moon, 6.1.1b Average orbital speed, 6.1.2a Contents of the Solar System, 6.1.2b Formation of the Solar System, 6.1.2c Gravitational field strength of a planet, and 6.1.2d Orbits and gravitational attraction. Each one has a worked solution and a mark scheme showing where the marks go.