Cosmic Distance Ladder Quiz

What is the cosmic distance ladder used for?

• To measure the temperature of stars

• To map the universe by measuring distances

• To calculate the speed of light

• To determine the age of the universe

What method is used to measure distances to nearby stars?

• Redshift

• Cepheid variables

• Type Ia supernovae

• Parallax

What is the main limitation of the parallax method?

• It only works for stars close enough to appear to move against a distant background

• It requires extremely large telescopes

• It only works for very distant stars

• It can only measure the brightness of stars

What type of stars are used as a rung on the distance ladder due to their brightness variations?

• Red giants

• White dwarfs

• Neutron stars

• Cepheid variables

What is a Type Ia supernova?

• A black hole forming event

• An explosion of a white dwarf when it surpasses a certain weight limit

• A collision between two galaxies

• An explosion of a massive star

What is redshift used to measure?

• The temperature of stars

• The distance to the farthest galaxies

• The age of the universe

• The mass of galaxies

Tags

NGSS.HS-ESS1-2

What does Hubble's law relate to?

• The brightness of stars

• The temperature of the cosmic microwave background

• The speed of light

• The distance and speed of galaxies receding from Earth

Tags

NGSS.HS-ESS1-2

What is the main characteristic of RR Lyrae stars?

• They are only found in the Milky Way

• They are the largest stars in the universe

• They are always the same brightness

• They are the hottest stars

What is a Hertzsprung-Russell (HR) diagram used for?

• To determine the age of the universe

• To plot a star's brightness and color

• To measure the distance to galaxies

• To calculate the mass of black holes

What is the significance of the Andromeda Galaxy in the cosmic distance ladder?

• It is the closest galaxy to the Milky Way

• It contains the oldest known stars

• It is used to measure distances using Cepheid variables

• It is the largest galaxy in the universe