Universe and Life Cycle of a Star

What is the first stage of the life cycle of a star for all stars?

• nebula
• protostar
• main-sequence
• red giant

This is a young star that glows as gravity brings it together

• Nebula
• Protostar
• Main-sequence star
• Red giant

In this stage, a star spends most of its life. Hydrogen is fused into helium at a temperature of millions of degrees.

• nebula
• protostar
• main-sequence
• supergiant

Tags

NGSS.HS-ESS1-3

Low mass stars expand into what after using up the hydrogen in their core

• red giants
• supergiants
• white dwarfs
• protostars

This stage is when a high mass star explodes

• Supergiant
• Red giant
• Supernova
• Black hole

This stage is made by densely packed neutrons and sometimes spins and blinks and is called a pulsar

• Supernova
• White dwarf
• Black hole
• Neutron star

When a star's gravitational pull is so strong that not even light can escape, it's called a what?

• Black hole
• Supernova
• White dwarf
• Nebula

Tags

NGSS.HS-PS2-4

The most important thing to know about a star is its...

• Volume
• Mass
• Temperature
• Age

What is the heaviest element that can be created (through fusion) inside of a Main Sequence Star?

• Helium
• Hydrogen
• Iron
• Carbon

Tags

NGSS.HS-ESS1-3

What is the biggest difference between a protostar and a main sequence star?

• Protostars are more massive than main sequence stars
• Protostars do not engage in nuclear fusion
• Stars spend far longer in the protostar phase than their main sequence
• Protostars are hotter than main sequence stars