Lesson 2: The Sun

What technology is primarily used to observe and study stars?

• spectroscopy

• telescopes

• prisms

• microscopes

Which type of star is slightly bigger than the Sun and glows bright red?

• Supergiants

• Red giants

• Sun-like stars

• Dwarf stars

What is the unit used to measure a star's size in relation to the Sun?

• Solar mass units

• Light years

• Astronomical units

• Solar radii

What technology is used to determine the composition of stars?

• Microscopy

• Spectroscopy

• Radiography

• Thermography

Tags

NGSS.HS-ESS1-2

What is the primary source of energy production in stars?

• Nuclear fission

• Chemical reactions

• Nuclear fusion

• Gravitational collapse

Tags

NGSS.HS-ESS1-1

NGSS.HS-PS1-8

Why do stars remain stable during their lifetime?

• Due to gravitational collapse

• Due to nuclear fission

• Due to the absence of nuclear fusion

• Due to the balance between gravity and nuclear fusion

When does a star begin to die?

• When it runs out of helium

• When it runs out of hydrogen

• When it explodes as a supernova

• When it becomes a red giant

Where are stars primarily formed?

• In black holes

• In nebulae

• In asteroids

• In galaxies

Which type of star is usually bright blue and hundreds of times the mass of the Sun?

• Red giants

• Dwarf stars

• Supergiants

• Sun-like stars

What determines how long a star lives and how it dies?

• Its brightness

• Its distance from the Earth

• Its initial size

• Its colour

Tags

NGSS.HS-ESS1-1