3/25/25 Bellwork

What force(s) allow stars to form?

• Gravity is the primary force that allows stars to form.
• Friction between cosmic dust particles initiates star formation.
• Nuclear forces are responsible for the birth of stars.
• Electromagnetic forces are the main factor in star formation.

What is the first step in the formation of a star?

• Gravitational collapse of a molecular cloud.
• Expansion of a supernova
• Nuclear fusion in the core
• Formation of a black hole

The formation of stars begin in the ________.

• supernovae
• nebulae
• galaxies
• areas of gas known as the nebula

Leftover matter around the star is ejected in _____ that rotates around the star.

• a flat plane

• stellar remnants
• a cosmic dust

• planetary fragments

How long does it take for a star to form?

• Stars form instantly without any time needed.
• It takes only a few hours for a star to form.
• It takes millions of years for a star to form.
• A star forms in a few days.