When parts of a gas cloud collapse, where does the material first form clumps?(1 point)

Question

Responses

in less dense regions with more space between atoms
in less dense regions with more space between atoms

in less dense regions with little space between atoms
in less dense regions with little space between atoms

in denser regions with more space between atoms
in denser regions with more space between atoms

in denser regions with little space between atoms
in denser regions with little space between atoms

Answer 1

When parts of a gas cloud collapse, material first forms clumps in denser regions with little space between atoms. This is because areas of higher density have a greater gravitational pull, leading to more effective clumping and collapse of the material.

Answer 2

Which is a mark of a galaxy formed by collapse?(1 point)
Responses

same age stars
same age stars

abundant gas and dust
abundant gas and dust

uniformly young stars
uniformly young stars

a mix of young and old stars

Answer 3

A mark of a galaxy formed by collapse is a mix of young and old stars. This is because as the galaxy forms, stars of various ages can be created at different times, resulting in a population that includes both older stars and younger stars still forming from the available gas and dust.

Answer 4

Under the influence of gravity, over time the dense central part of a galaxy will do what?(1 point)
Responses

expand
expand

stay the same size but spin more slowly
stay the same size but spin more slowly

contract
contract

stay as it is, forces balanced

Answer 5

Under the influence of gravity, over time the dense central part of a galaxy will contract. The gravitational attraction in the dense region causes the material to pull together, leading to a contraction of that area.

Answer 6

Which method of galaxy formation is expected to dominate far in the future?(1 point)
Responses

primordial collapse
primordial collapse

merging
merging

slow evolution
slow evolution

spreading

Answer 7

The method of galaxy formation expected to dominate far in the future is merging. As galaxies evolve over time, they are likely to interact and merge with other galaxies, leading to the growth and evolution of larger galaxies.

Answer 8

Which factors are most likely to affect whether a galaxy will evolve by merging with a second galaxy? Select the two correct answers.(1 point)
Responses

its age compared to that of the other galaxy
its age compared to that of the other galaxy

its distance from the other galaxy
its distance from the other galaxy

its proportion of gas compared to that of the other galaxy
its proportion of gas compared to that of the other galaxy

its size compared to that of the other galaxy

Answer 9

The two factors that are most likely to affect whether a galaxy will evolve by merging with a second galaxy are:

1. its distance from the other galaxy
2. its size compared to that of the other galaxy

The distance between galaxies influences the likelihood of interaction, while the size can affect gravitational attraction and the dynamics of the merging process.

Answer 10

Where is most of the baryonic matter (ordinary matter) of the universe found?(1 point)
Responses

in comets and asteroids
in comets and asteroids

in interstellar gases and stars
in interstellar gases and stars

in dark matter and dark energy
in dark matter and dark energy

in planets and natural satellites

Answer 11

Most of the baryonic matter (ordinary matter) of the universe is found in interstellar gases and stars. This includes the gas in galaxies as well as the stars that make up those galaxies.