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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 Mars and Jupiter Mars and Jupiter Uranus and Saturn Uranus and Saturn Earth and Venus Earth and Venus Mercury and Neptune

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

  • 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

Looking at the values:

  • Mercury (4,800 km) and Mars (6,700 km): Difference of 1,900 km
  • Venus (12,100 km) and Earth (12,800 km): Difference of 700 km
  • Uranus (51,100 km) and Neptune (50,000 km): Difference of 1,100 km
  • Jupiter (143,000 km) and Saturn (120,000 km): Difference of 23,000 km

The closest diameters (smallest difference) when compared are Venus and Earth, with a difference of only 700 km.

Therefore, the two planets that should be the closest in diameter on the scale model are Earth and Venus.