Question 17 of 21 Sapling Learning macmillan learning Will the stars currently i

Question

Question 17 of 21 Sapling Learning macmillan learning Will the stars currently in the Milky Way's spiral arms always remain there? Why or why not? O O O O No, stars in move into and out of spiral arms. Yes, stars are fixed in the spiral pattern. the stars. Yes, stars remain in the arms but move closer to the center of the Galaxy No, strong stellar winds cause the spiral structure to dissipate and move away from What is most likely the cause of the spiral pattern in galaxies like the Milky Way? O O O A central black hole sucks material in causing a "galactic whirlpool'" The spiral arms are caused by spiral density waves. The spiral arms are held together by gravitational attraction to other nearby stars, forming a rigid rotating structure.

Explanation / Answer

1) No, stars rotate with the disk of the galaxy and move through

2) The spiral arms are caused by spiral density waves , star formation caused by density waves in the galactic disk of the galaxy.

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