Practice Quiz

NAEP Science Grade 12

Category - Science

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A planetary model of a system, such as the models of the Solar System and the atom discussed here, is appropriate whenever the components of the system and the nature of the forces between them have certain properties. Which of the following might be some of these properties?
  1. One of the components is much more massive than the others and exerts an attractive force on each of the other components.
  2. One of the components is much more massive than the others and exerts a force on each of the other components that is perpendicular to the line connecting their centers.
  3. All the components are equally massive, are far apart, and attract each other.
  4. All the components are equally massive, are close together, and repel each other.
Explanation
Answer: A - One of the components is much more massive than the others and exerts an attractive force on each of the other components.
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