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[Table 8.1: data for three planets — Mercury: time for one orbit of Sun 88 days, distance from Sun 5.8 × 10⁷ km, average density 5400 kg/m³, gravitational field strength at surface 3.7 N/kg; Venus: 220 days, 1.1 × 10⁸ km, 5200 kg/m³, 8.9 N/kg; Earth: 365 days, 1.5 × 10⁸ km, 5500 kg/m³, 9.8 N/kg.]
[Fig. 8.1 (not to scale): the Sun with Mercury, Venus and Earth drawn in a straight line to the right of it, in that order; a curved arrow at the right shows the direction in which the planets orbit the Sun.]
Fig. 8.1 shows these planets in alignment with the Sun. They rotate around the Sun in the direction shown.
Mark and label on Fig. 8.1 the positions of the three planets 110 days after the position shown in Fig. 8.1.
Table 8.1 shows data about three planets, Mercury, Venus and Earth.
| planet | time for one orbit of Sun / days | distance from Sun / km | average density / kg/m³ | gravitational field strength at surface / N/kg |
|---|---|---|---|---|
| Mercury | 88 | 5.8 × 10⁷ | 5400 | 3.7 |
| Venus | 220 | 1.1 × 10⁸ | 5200 | 8.9 |
| Earth | 365 | 1.5 × 10⁸ | 5500 | 9.8 |
Swipe sideways to see all columns.
Fig. 8.1 shows these planets in alignment with the Sun. They rotate around the Sun in the direction shown.
Mark and label on Fig. 8.1 the positions of the three planets 110 days after the position shown in Fig. 8.1.