The Life Cycle of the Sun

Star formation begins in the...

• main sequence

• nebula

• dwarfism

• periodic table

Tags

NGSS.HS-ESS1-1

NGSS.HS-ESS1-3

Which is an accurate description of determining a stars life span? 

• the less mass of the star the longer the life span

• stars never die

• all stars shine the same

• stars don't have a life cycle

Tags

NGSS.HS-ESS1-1

NGSS.HS-ESS1-3

Our Sun is considered slightly below average in mass. As it is a small to medium mass star, what would be the name of the phase that our Sun would enter after it exits the Main Sequence?

• Red Super Giant

• Yellow Super Giant

• White Giant

• Red Giant

Protostar

• Star left at the core of a planetary nebula

• a large cloud of gas or dust in space

• the earliest stage of a star's life

• red super giant explodes

Answer explanation

At which point in its development does a star exit the protostar stage and become a main sequence star?

• When the nuclear fusion process begins

• When collisions in particles result in an increase of temperature

• When gravity squeezes it making it more dense

• When it gets bigger and gravity gets stronger causing it to collide more often

Tags

NGSS.HS-ESS1-1

When a star begins to run out of ___________, it is the beginning of the end of the star's ability to produce energy in a process known as ________ _______.

• Hydrogen; nuclear fusion

• Helium; nuclear fusion

• Hydrogen; solar radiation

Tags

NGSS.HS-ESS1-1

There are 2 points in the life cycle of a star that stars can take different paths. In each of these cases, it is the _______ of the star that determines the path it will take.

• Color

• Mass

• Temperature

• Brightness

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

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

What is the initial stage of the Sun's life cycle?

• Main Sequence

• Red Giant

• Nebula

• White Dwarf