What process occurs in the core of a star to make it glow?

• Magnetic field

• Gravitational pull

• Chemical reaction

• Nuclear fusion

Tags

NGSS.HS-ESS1-1

NGSS.HS-PS1-8

What are the two main gases that make up most stars?

• Nitrogen and Helium

• Carbon and Oxygen

• Oxygen and Nitrogen

• Hydrogen and Helium

Tags

NGSS.HS-ESS1-1

What term do astronomers use to refer to a star's true brightness?

• Luminosity

• Apparent brightness

• Radiance

• Magnitude

Which factor is more important when measuring a star's apparent brightness?

• Color

• Distance from Earth

• Size

• Temperature

Why does the Sun appear brighter to us than Betelgeuse?

• The Sun is larger

• The Sun is closer to Earth

• The Sun has more power

• The Sun is hotter