Life Cycle of Stars 8th

Stars are formed from big clouds of gas and dust is known as:

• dust cloud

• space fog

• neutron clouds

• nebulae

Tags

NGSS.HS-ESS1-3

A star is born when:

• nuclear fusion starts

• a nebula becomes a protostar

• gases in a nebula condense

• hydrogen is used up in fusion processes

Tags

NGSS.HS-ESS1-1

A star that has begun nuclear fusion will last for:

• millions of years

• a few thousand years

• as long as the universe survives

• forever

Tags

NGSS.HS-ESS1-1

Main sequence stars are made primarily of which elements?

• Hydrogen only

• Helium and Carbon

• Carbon and Iron

• Hydrogen and Helium

Tags

NGSS.HS-ESS1-1

NGSS.HS-ESS1-3

When a massive star begins to cool and expand it is known as a:

• Black Dwarf

• Red Giant

• Red Supergiant

• White Dwarf

Tags

NGSS.HS-ESS1-3

The stable and longest lasting period of a star’s life cycle is called:

• The birth of a star

• Nebula

• Neutron star

• Main Sequence

Tags

NGSS.HS-ESS1-3

The combining of two or more atoms in a stars core into a new heavier atom.

• Fission
• Fusion
• Nuclear Reactions
• Nucleosynthesis

Tags

NGSS.HS-ESS1-1

NGSS.HS-ESS1-3

NGSS.HS-PS1-8

measures how bright a star would be in relation to the sun if all stars were the same distance from the observer

• Brightness
• Luminosity
• Apparent Magnitude
• Photic Strength

A small, hot, dim star that is the leftover center of an old star

• Yellow dwarf star
• Black dwarf star
• White dwarf star
• Red dwarf star

All stars begin their life as a

• Main Sequence

• Nebula

• Protostar

• Black Dwarf