An analogy makes a comparison between objects based on their similar qualities. cassidy wanted to create an analogy for the motion of atoms in solids, liquids, and gases, so she compared them to marbles in a tray. which best compares the phases of matter to marbles in a tray? a solid is like the tray being shaken and the marbles moving around it, and a liquid is like the tray being shaken slowly and all the marbles moving in their positions. a solid is like the tray being shaken slowly and all the marbles moving in their positions, a liquid is like the tray being shaken and the marbles moving around it, and a gas is like the tray being shaken hard and the marbles moving vigorously around it. a gas is like the tray being shaken slowly and all the marbles moving in their positions, and a solid is like the tray being shaken hard and the marbles moving vigorously around it. a liquid is like the tray being shaken hard and the marbles moving vigorously around it, and a gas is like the tray being shaken slowly and all the marbles moving in their positions.

A solid is like the tray being shaken slowly and all the marbles moving in their positions, a liquid is like the tray being shaken and the marbles moving around it, and a gas is like the tray being shaken hard and the marbles moving vigorously around it. Let's look at Cassidy's analogy based upon our knowledge of the differences between solids, liquids, and gasses. Solid = atoms are in a fixed relationship to their neighbors. Liquid = atoms are in contact with each other, but not in a fixed relationship. They can move relative to each other. Gas = atoms are in rapid motion and not in contact with each other. Now let's look at the possible answers and see which corresponds to reality. A solid is like the tray being shaken and the marbles moving around it, and a liquid is like the tray being shaken slowly and all the marbles moving in their positions. ** This one has two problems. A gas isn't even mentioned and roles of a solid vs a liquid are swapped. So this is a bad choice. A solid is like the tray being shaken slowly and all the marbles moving in their positions, a liquid is like the tray being shaken and the marbles moving around it, and a gas is like the tray being shaken hard and the marbles moving vigorously around it. ** This sounds like a very good choice. Let's see if the remaining choices are as good or better. A gas is like the tray being shaken slowly and all the marbles moving in their positions, and a solid is like the tray being shaken hard and the marbles moving vigorously around it. ** Two problems here as well. No mention of liquids, and the roles of solids and gasses have been swapped. Bad choice. A liquid is like the tray being shaken hard and the marbles moving vigorously around it, and a gas is like the tray being shaken slowly and all the marbles moving in their positions. ** This one also has problems. The liquid is described the way a gas should be. And the gas is being described like a solid would be. And there's no mention of a solid. So this is a bad choice as well.