5.2 Life Cycle of Stars Quiz

Low mass stars will burn through their fuel ​ (a)   high mass stars.

• slower than
• faster than
• at the same rate as

When is a star considered a main-sequence star?

• When it is no longer fusing any elements in its core

• When it is in the final stages of its life and is about ready to die

• When it is fusing hydrogen into helium in its core and is in a stable phase of its life cycle

• When it has exhausted its hydrogen fuel and is starting to fuse heavier elements

Tags

NGSS.HS-ESS1-1

Match the correct phase of a low mass star’s life cycle to the proper description.

• White Dwarf

• Has begun fusion and is in stellar equilibrium.

• Protostar

• Spinning region that will develop into a star, no fusion yet.

• Main Sequence

• A small, dense remnant of a star that has used its nuclear fuel and no longer undergoes fusion.

• Red Giant

• A low-mass star that has expanded and cooled.

Tags

NGSS.HS-ESS1-3

Put the stages of a high-mass star's life in order with "1" being the earliest stage:

• Black Hole

• Main Sequence

• Solar Nebula

• Protostar

• Supergiant

An older main sequence star would have a greater percentage of helium than a younger main sequence star because...

• the older star has had more time to fuse hydrogen into helium in its core.

• the older star is larger and hotter, causing it to fuse helium faster.

• the older star's core has more mass and has more fuel to burn.

• the older star is fusing elements other an hydrogen into helium.

Tags

NGSS.HS-ESS1-1

NGSS.HS-ESS1-3

Stellar equilibrium is the balance between the inward force of​ (a)   trying to crush the star, ​and outward pressure caused by​ (b)   which keeps a star stable in size and shape.

• gravity
• nuclear fusion
• nuclear fission
• magnetism
• solar wind

Tags

NGSS.HS-ESS1-1

NGSS.HS-PS2-4

Which star(s) would have a shorter lifespan than the Sun?

• A

• B

• Both A & B

• D

Tags

NGSS.HS-ESS1-1