Astronomy - Ch. 18 & 19 Review: Interstellar Medium and Birth

Interstellar medium consists of _____________________________.

• Dust only

• Gas only

• Planets

• Gas and Dust

• Planets and Gas

What are dark areas associated with an emission nebula called?

• Dust lanes

• Reflection nebulae

• Zones

• Star Clusters

Which natural behavior of atoms does gravity NOT compete with to initiate star formation?

• Rotation

• Heat

• Electromagnetism

• Weak Nuclear Force

Which stage of star formation is associated with dark dust clouds?

• Stage 1

• Stage 3

• Stage 5

• Stage 6

Which of the following takes place in Stage 4?

• Clouds fragment

• The star reaches equilibrium

• Fragmentation stops

• The protostar develops a photosphere

Which of the following is an example of a star cluster?

• Ursa Minor

• M20

• Jupiter

• Pleiades 

• Sol

The movement of a star on the H-R diagram during star formation is called what?

• Light curve

• Evolutionary Track

• Association

• Flux

What is the main factor in determining how a star undergoes star formation?

• Mass

• Volume

• Composition

• Temperature

• Luck

Which type of star cluster would most likely have the most stars?

• Open

• Associate

• Globular

• Fuzzy

What is the fate of most clusters?

• They become black holes

• They stay together and become globular clusters

• They dissolve into individual stars

• They are the seeds for new galaxies