The Life and Death of Our Sun Video Quiz

What is the process called when hydrogen nuclei combine to form helium in the sun's core?

• Combustion

• Fusion

• Fission

• Reaction

What is the estimated lifetime of our sun?

• 5 billion years

• 10 billion years

• 12 billion years

• 15 billion years

What will happen to the earth in 1 billion years due to the sun's increased brightness?

• It will be 30 percent hotter

• It will become a global desert

• It will be engulfed by the sun

• It will be 100 degrees hotter

What will happen to the earth when the sun becomes a red giant?

• It will be engulfed by the sun

• It will remain unaffected

• It will be 100 degrees hotter

• It will be ejected into space

What will the sun become after using all the of hydrogen and starts fusing helium at its core?

• White dwarf

• Black hole

• Red giant

• Neutron star

What will the sun ignite after the helium is exhausted in its core?

• Carbon and oxygen

• Nitrogen and hydrogen

• Helium and lithium

• Sodium and potassium

What will happen to the planets Mercury and Venus when the sun becomes a red giant?

• They will be engulfed by the sun

• They will be 100 degrees hotter

• They will be ejected into space

• They will remain unaffected

What is the name of the star near the end of its red giant stage, which has been observed to understand the fate of our sun?

• Proxima Centauri

• Betelgeuse

• Sirius

• Kai Signi

What is the process called when the outer part of the sun expands and contracts during the second red giant phase?

• Pulsation

• Expansion

• Contraction

• Fusion

What is the potential fate of the earth when the sun reaches its 10 billionth birthday?

• It will be ejected into space

• It will be engulfed by the sun

• It will remain unaffected

• It will be 100 degrees hotter