Question

The table shows properties of some planets in the solar system. Property Venus Earth Mars Jupiter Saturn Neptune Average Distance from the Sun (AU) 0.72 1.0 1.5 5.2 9.5 30 Length of Year (Earth years) 0.62 1.0 1.9 11.9 29.4 164.8 Time for One Rotation (Earth days) 243 1.0 1.03 0.41 0.44 0.67 Mass (compared to Earth) 0.80 1.0 0.1 318 95 17 Surface Gravity (compared to Earth) 0.90 1.0 0.38 2.53 1.06 1.14 Size (compared to Earth) 0.94 1.0 0.53 11.0 9.1 3.9 Average Surface Temperature (ºC) 462 14 –62 –145 –140 –214 Number of Moons 0 1 2 79 82 14

Answer 1

From the table, we can see the following properties of the planets:

1. Venus:
- Average Distance from the Sun: 0.72 AU
- Length of Year: 0.62 Earth years
- Time for One Rotation: 243 Earth days
- Mass (compared to Earth): 0.80
- Surface Gravity (compared to Earth): 0.90
- Size (compared to Earth): 0.94
- Average Surface Temperature: 462 ºC
- Number of Moons: 0

2. Earth:
- Average Distance from the Sun: 1.0 AU
- Length of Year: 1.0 Earth years
- Time for One Rotation: 1.0 Earth days
- Mass (compared to Earth): 1.0
- Surface Gravity (compared to Earth): 1.0
- Size (compared to Earth): 1.0
- Average Surface Temperature: 14 ºC
- Number of Moons: 1

3. Mars:
- Average Distance from the Sun: 1.5 AU
- Length of Year: 1.9 Earth years
- Time for One Rotation: 1.03 Earth days
- Mass (compared to Earth): 0.1
- Surface Gravity (compared to Earth): 0.38
- Size (compared to Earth): 0.53
- Average Surface Temperature: -62 ºC
- Number of Moons: 2

4. Jupiter:
- Average Distance from the Sun: 5.2 AU
- Length of Year: 11.9 Earth years
- Time for One Rotation: 0.41 Earth days
- Mass (compared to Earth): 318
- Surface Gravity (compared to Earth): 2.53
- Size (compared to Earth): 11.0
- Average Surface Temperature: -145 ºC
- Number of Moons: 79

5. Saturn:
- Average Distance from the Sun: 9.5 AU
- Length of Year: 29.4 Earth years
- Time for One Rotation: 0.44 Earth days
- Mass (compared to Earth): 95
- Surface Gravity (compared to Earth): 1.06
- Size (compared to Earth): 9.1
- Average Surface Temperature: -140 ºC
- Number of Moons: 82

6. Neptune:
- Average Distance from the Sun: 30 AU
- Length of Year: 164.8 Earth years
- Time for One Rotation: 0.67 Earth days
- Mass (compared to Earth): 17
- Surface Gravity (compared to Earth): 1.14
- Size (compared to Earth): 3.9
- Average Surface Temperature: -214 ºC
- Number of Moons: 14