With which type of galaxy is a small galaxy most likely to merge? Select the two correct answers.
Responses:
a) a fast-moving galaxy
b) a much larger galaxy
c) an equal-sized galaxy
d) a nearby galaxy
b) a much larger galaxy
d) a nearby galaxy
The two correct answers are:
b) a much larger galaxy
d) a nearby galaxy
To determine which type of galaxy a small galaxy is most likely to merge with, we need to consider a few factors. The key factors in galaxy mergers are size and proximity.
First, let's consider the size of the galaxies involved. In general, smaller galaxies are more likely to merge with larger galaxies rather than with equal-sized or smaller galaxies. This is because larger galaxies have stronger gravitational forces, which can exert a pull on smaller neighboring galaxies, drawing them closer and eventually merging with them. So, option (b) a much larger galaxy is one correct answer.
Secondly, let's consider the proximity of the galaxies. Galaxies that are closer to each other are more likely to merge compared to galaxies that are farther apart. Therefore, option (d) a nearby galaxy is another correct answer.
In summary, a small galaxy is most likely to merge with a much larger galaxy (option b) and a nearby galaxy (option d).