(d) The table below glves information about live planets planet
distance from
the Sun (million
km)
110
time for planet to
orbit
the Sun (Earth years)
0.6
Venus
Earth
150
1.0
Mars
230
Jupiter
780
12.0
Saturn
1400
30.0
(1) Look at the information in the table.
How does the time for a planet to orbit the Sun change with its distance
from the Sun?
1 mark
(ii) Use information in the table to estimate the time for Mars to orbit the
Sun.
Earth-years
1 mark
(e) The diagram below shows the path of a comet around the Sun.
On the path of the comet below, place a letter X to show the position where
the comet is travelling the fastest.