The time taken for Jupiter to orbit the Sun is 4330 Earth days. The average orbital radius of Jupiter is 7.78 × 108 km. An Earth day is 24 h.
Calculate the average orbital speed of Jupiter in km/s\text{km/s}km/s.
average speed=…………… km/s \text{average speed} = \dots\dots\dots\dots\dots \text{ km/s} average speed=…………… km/sState the shape of the orbits of the planets in our Solar System.
Light from a distant galaxy is redshifted.
Explain what is meant by redshift.
State the quantity about the galaxy's motion that the redshift of a galaxy is used to calculate.
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.