Question

An unlabeled hierarchical diagram of various astronomical bodies is shown. The labels A, B, C and D can be used to represent the galaxy, Mars, universe, moon, and solar system. An image of four circles nestled one within the other is shown. The lower boundary of all four circles touch one another. The largest and the outermost circle is labeled A. The next circle in order is labeled B. The next circle is labeled C. The innermost circle is labeled D. Part 1: Which four astronomical bodies would you choose to represent the four labels in the diagram? Part 2: Explain why the hierarchical level D is different from the rest.

Answer 1

The four(4) astronomical bodies that can be represented by the image would be A - universe; B - galaxy; C - Solar System; D - Mars.

If you look at the image it shows that one object or one circle is within another and looking at the analogy of the choices, mars is within a solar system; the solar system is within a galaxy; and a galaxy is within the universe.

The D hierarchical level is different because unlike the other choices, there is nothing in it. Instead, it is beneath all the other circles in the diagram. Mars is labeled as D, it has no celestial body within it, unlike the rest.