Difficulty: Hard
Average Score: 46%
Saturn's rings contain enormous numbers of particles. These particles sometimes experience collisions with each other. Scientists need to know how those collisions transfer energy in order to model the overall structure and composition of the rings. Images of particles in Saturn's rings reveal that only 50-60% of the particles' energy remains after a collision. To identify which types of particles could explain the observations, a scientist tests substances in a laboratory and measures the energy remaining after a collision, To Particles of those substances. The table shows the scientist's results.

Based on these results and assuming that whenever two materials are present their remaining energy is averaged, what would the scientist best conclude to be the composition of Saturn's rings?

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