Which of the following analogies best describes how the structure of the galaxy's spiral arms is maintained?
A)Like military jets flying in formation above a football stadium,the stars in the spiral arms keep a spiral-shaped formation as they orbit the galaxy.
B)Like cars slowing in traffic to look at an accident,stars slow as they pass through the spiral arms.
C)Like a coiling rope,the spiral arms wind up tighter with every galactic rotation.
D)Like the fins of a giant pinwheel toy,the spiral arms carry a set of bright stars around as they sweep through the galaxy.

Question

Quizplus · Accepted Answer

The analogy of cars slowing in traffic to look at an accident best describes how the structure of the galaxy's spiral arms is maintained. This is because the spiral arms are areas of higher density in the galaxy, causing stars to slow down due to gravitational interactions as they pass through these regions, similar to how cars slow down to look at an accident. This process helps maintain the spiral structure.

Which of the Following Analogies Best Describes How the Structure