With which type of galaxy is a small galaxy most likely to merge? Select the two correct answers.(1 point)
Responses
an equal-sized galaxy
an equal-sized galaxy
a fast-moving galaxy
a fast-moving galaxy
a nearby galaxy
a nearby galaxy
a much larger galaxy
a nearby galaxy
a much larger galaxy
A small galaxy is most likely to merge with:
- An equal-sized galaxy
- A much larger galaxy
To determine which type of galaxy a small galaxy is most likely to merge with, we need to consider the factors that contribute to galaxy mergers. Typically, galaxy mergers occur between galaxies that are in close proximity to each other and have a similar size. However, the small galaxy can also merge with a much larger galaxy due to gravitational forces.
So, the correct answers are:
- an equal-sized galaxy: A small galaxy is most likely to merge with another galaxy of similar size since their gravitational forces would be comparable and they are more likely to be close to each other.
- a much larger galaxy: In some cases, a small galaxy can also be captured and merge with a much larger galaxy due to the larger galaxy's stronger gravitational pull. This can happen even if the small galaxy is not in close proximity to the larger one.
So, the correct answers are an equal-sized galaxy and a much larger galaxy.
Which factor is essential to the initial formation of galaxies, for either of the theories describing galaxy evolution?(1 point)
Responses
Massive gas and dust clouds collapse.
Massive gas and dust clouds collapse.
Small lumps of material merge into larger clumps.
Small lumps of material merge into larger clumps.
Gravity acts on existing material, shaping it into a new form.
Gravity acts on existing material, shaping it into a new form.
The force of orbiting stars generates collisions.
Massive gas and dust clouds collapse.
Which characteristics are considered most typical of an old galaxy in decline?(1 point)
Responses
shrinking in size, high dust content
shrinking in size, high dust content
spiral, abundant planets present
spiral, abundant planets present
low gas content, little star formation
low gas content, little star formation
very bright, relatively small