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Suppose a student develops a scale model of the planets. Which two planets should be the closest in diameter on the model?



Comparison of Planet Size

Planet Diameter (km)
Mercury 4,800
Venus 12,100
Earth 12,800
Mars 6,700
Jupiter 143,000
Saturn 120,000
Uranus 51,100
Neptune 50,000
(1 point)
Responses

Uranus and Saturn
Uranus and Saturn

Mars and Jupiter
Mars and Jupiter

Mercury and Neptune
Mercury and Neptune

Earth and Venus

1 answer

To determine which two planets should be the closest in diameter on a scale model, we can look at the diameters of the planets provided in the data:

  • Mercury: 4,800 km
  • Venus: 12,100 km
  • Earth: 12,800 km
  • Mars: 6,700 km
  • Jupiter: 143,000 km
  • Saturn: 120,000 km
  • Uranus: 51,100 km
  • Neptune: 50,000 km

Next, we can calculate the differences in diameter between each pair of planets presented in the options:

  1. Uranus and Saturn:

    • 51,100 km - 120,000 km = 68,900 km difference

  2. Mars and Jupiter:

    • 6,700 km - 143,000 km = 136,300 km difference

  3. Mercury and Neptune:

    • 4,800 km - 50,000 km = 45,200 km difference

  4. Earth and Venus:

    • 12,800 km - 12,100 km = 700 km difference

Looking at these differences, Earth and Venus have the smallest difference in diameter, making them the closest to each other in size for the scale model.

So, the correct response is: Earth and Venus.