Question 1

The best place to find star formation is in a ______.&#10;A) nebula&#10;B) molecular cloud&#10;C) supernova&#10;D) nova

Accepted Answer

Molecular clouds, also known as stellar nurseries, are the primary sites for star formation. These dense regions of gas and dust provide the necessary conditions for stars to begin forming through the process of gravitational collapse.

Question 2

When a new star ejects gas in opposite directions, this is known as _______.&#10;A) tri flow&#10;B) ejection flow&#10;C) bipolar flow&#10;D) opposite flow

Accepted Answer

When a new star ejects gas in opposite directions, it is known as bipolar flow. This phenomenon is observed in the early stages of star formation, where the young star ejects material along its rotational axis, creating two opposite and outward-moving flows.

Question 3

Small dark areas in gas clouds that may be prime stellar formation areas are called ______.&#10;A) Dark Globules&#10;B) Bok Globules&#10;C) Proto Globules&#10;D) Molecular Globules

Accepted Answer

Bok Globules are small, dense clouds of dust and gas in interstellar space where star formation can occur. They are named after the astronomer Bart Bok, who first drew attention to them as potential sites of star formation.

Question 4

Objects with masses between about 0.08 and 0.016 times the mass of the Sun are called&#10;A) white dwarfs.&#10;B) red dwarfs.&#10;C) yellow dwarfs.&#10;D) brown dwarfs.

Accepted Answer

Brown dwarfs are objects with masses between about 0.08 and 0.016 times the mass of the Sun, too massive to be considered planets but not massive enough to sustain nuclear fusion of hydrogen in their cores, which is the process that powers stars.

Question 5

Newly formed stars that are also variable are called _______.

Accepted Answer

The answer of Newly formed stars that are also variable...

Question 6

Dark dense star forming cloud regions are known as ____________________________.

Accepted Answer

The answer of Dark dense star forming cloud regions are...

Question 7

A star's first energy source comes from gravitational collapse.

Accepted Answer

During the initial phase of a star's formation, gravitational energy is converted into heat as the gas cloud collapses under its own gravity, leading to the increase in temperature and pressure necessary for nuclear fusion to eventually begin.

Question 8

The lower limit for a normal star is about .1 solar masses.

Accepted Answer

Stars with masses lower than about 0.1 solar masses do not have enough mass to initiate hydrogen fusion in their cores, which is necessary for a celestial object to be considered a normal star.

Deck 61: Star Formation