Reading: The Sun

What process ignited the Sun, allowing it to shine brightly?

• Nuclear fusion

• Chemical reaction

• Gravitational collapse

• Magnetic field interaction

Which type of light emitted by the Sun is responsible for causing sunburns?

• Ultraviolet light

• Visible light

• Infrared radiation

• X-rays

What percentage of the Sun's mass is made up of hydrogen?

• 74%

• 50%

• 90%

• 25%

How many Earths could fit inside the Sun?

• 1.3 million

• 100,000

• 500,000

• 2 million

What will the Sun eventually become as it continues to age?

• Red giant

• White dwarf

• Black hole

• Neutron star