Age of Stars

Our sun is currently in what star stage?

• Protostar

• Nebula

• Main Sequence

• Red Giant

Tags

NGSS.HS-ESS1-1

Which of the following is true for red stars as compared to blue stars?

• They live longer

• They are hotter

• They are always brighter

• They convert hydrogen to helium faster

Which of the following methods is used to determine the age of a star?

• Spectroscopic analysis

• Parallax measurement

• Radioactive dating

• Gravitational lensing

What is the primary factor that determines the lifespan of a star?

• Its temperature

• Its mass

• Its distance from Earth

• Its chemical composition

Tags

NGSS.HS-ESS1-1

Which type of star is typically older, a red giant or a blue giant?

• Red giant

• Blue giant

• Both are the same age

• It depends on their mass

Tags

NGSS.HS-ESS1-3

What is the significance of the Hertzsprung-Russell diagram in understanding stars?

• It shows the chemical composition of stars

• It plots stars according to their brightness and temperature

• It measures the distance of stars from Earth

• It predicts the future position of stars

How does the metallicity of a star relate to its age?

• Older stars have higher metallicity

• Younger stars have higher metallicity

• Metallicity does not change with age

• Metallicity is the same for all stars

Which of the following elements is most likely to be found in older stars?

• Hydrogen

• Helium

• Iron

• Lithium

Tags

NGSS.HS-ESS1-3

What role do white dwarfs play in determining the age of star clusters?

• They are used to measure the cluster's metallicity

• They help determine the cluster's distance

• They provide a lower age limit for the cluster

• They indicate the cluster's chemical composition

Which process marks the end of a star's main sequence phase?

• Hydrogen fusion in the core ceases

• Helium fusion in the core begins

• The star becomes a supernova

• The star collapses into a black hole

Tags

NGSS.HS-ESS1-1