Reason About Scale Practice Test

A student wants to use one scale to show both planet sizes and planet distances in the same poster. They choose: 1 cm = 10 million km for both size (diameter) and distance.

Model limit: The poster is only 60 cm wide.

Which statement best explains a limitation of using the same scale for both size and distance?

A poster uses a distance-only scale: 1 cm = 100 million km. The student places Earth 1.5 cm from the Sun and Neptune 45 cm from the Sun.

Model limit: To fit on the poster, the student does not include the asteroid belt and draws all planets as the same dot.

Which statement must be true given the scale and placements?