Star Birth

A contracting cloud of gas and dust that may eventually become a star is called a (an) :

• protostar

• white dwarf

• red giant

• black hole

Stars form from huge clouds of gas and dust in space called :

• supernova

• nebula

• the Kuiper Belt

• the Oort Cloud

Tags

NGSS.MS-ESS1-2

What force causes a cloud of dust and gas to come together and form a star ?

• friction

• magnetism

• electromotive

• gravity

Tags

NGSS.HS-PS2-4

In a star's core, how is energy being produced ?

• gold turns into silver

• oxygen turns into carbon dioxide

• hydrogen turns into helium

• aluminum turns into carbon

Tags

NGSS.HS-ESS1-1

NGSS.HS-PS1-8

NGSS.HS-ESS1-3

What factor determines how long a star will last ?

• it's mass

• it's composition

• neighboring stars

Tags

NGSS.HS-ESS1-1

Stars are round due to a balance of forces. What is the name of the balance?

• radiation pressure

• nuclear fusion

• gravity

• hydrostatic equilibrium

The reaction in the core of a star that makes them shine is called

• nuclear fission

• supernova

• hydrostatic equilibrium

• nuclear fusion

Tags

NGSS.HS-ESS1-1

NGSS.HS-PS1-8

Stars that never accumulated enough mass for core nuclear fusion to fully occur are

• classified as white dwarfs.

• known as Hayashi tracked protostars.

• called "failed Jupiters."

• known as brown dwarfs.

Tags

NGSS.HS-ESS1-3

A protostar is luminous (gives off light), due to...

• gravitational compression and heating
• H --> He Fusion
• spinning speed
• the triple alpha process

List the spectral classes in order of hottest to coldest

(a)   (b)   A ​ (c)   G ​ (d)   ​ (e)  

• O
• B
• F
• K
• M