(a(i))[2]
State the names of planet A and of planet B.
(a(ii))[1]
On Fig. 10.1, place an X to represent one moon of Jupiter. Add a line to show how this moon moves.
(a(iii))[2]
State two differences between the four planets closest to the Sun and the four planets furthest away from the Sun.
(a(iv))[2]
Fill in the missing words: The galaxy containing the Solar System is known as the [BLANK]. The [BLANK] contains billions of galaxies.
(b)[3]
Calculate how long an electromagnetic wave takes to travel from the Sun to the Earth.