Question

Students are using balloons to describe the expanding universe model. The students blow up severai bailoons and put them on the floor. Each balloon represents a different galaxy.
How should the students move or change the balloons to demonstrate how the universe is expanding?
(A All of the balloons should be moved to the center of the floor.
(B Each balloon should be inflated more so that they are all increasing in size.
c Each balloon should be deflated so that there is more distance between the surface of each balloon.
D All of the balloons should be moved away from each other so there is more distance between them.

Answer 1

To demonstrate how the universe is expanding, the students should choose:

**D. All of the balloons should be moved away from each other so there is more distance between them.**

This effectively illustrates that as the universe expands, galaxies (represented by the balloons) move away from each other, similar to how galaxies in the universe are receding from one another as space itself expands. The increase in distance between the balloons symbolizes the expansion of the universe.