What are the two main forces in a star's life that are in constant struggle?

• Magnetism and gravity

• Gravity and internal heat

• Nuclear fusion and magnetism

• Internal heat and radiation

What element does hydrogen fusion create in stars?

• Carbon

• Oxygen

• Helium

• Neon

Tags

NGSS.HS-ESS1-1

NGSS.HS-ESS1-3

At what core temperature does carbon fusion occur in massive stars?

• 1.5 billion degrees Celsius

• 1 billion degrees Celsius

• 500 million degrees Celsius

• 100 million degrees Celsius

What type of star does a massive star become after hydrogen fusion stops and helium fusion begins?

• Red supergiant

• Red giant

• White dwarf

• Blue giant

Which star is an example of a red supergiant?

• Rigel

• Betelgeuse

• Spica

• VY Canis Majoris

What happens to the core of a star when iron fusion begins?

• It remains stable

• It collapses

• It cools down

• It expands

Tags

NGSS.HS-PS1-8

What is formed if a star's core collapse stops at about 20 kilometers wide?

• Neutron star

• Red giant

• White dwarf

• Black hole

What is the term for the expanding material after a supernova explosion?

• Supernova remnant

• Black hole

• Nebula

• White dwarf

Which star is mentioned as being too far away to harm Earth when it explodes?

• Spica

• VY Canis Majoris

• Betelgeuse

• Rigel

What process creates heavy elements during a supernova explosion?

• Explosive nucleosynthesis

• Radioactive decay

• Gravitational collapse

• Nuclear fission