Welcome to the Quiz!
This quiz contains 11 questions from a mix of 1 subtopics.
What does the Hertzsprung-Russell diagram plot?
absolute magnitude against distance
apparent magnitude against temperature
absolute magnitude against temperature
luminosity against mass
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How does temperature change along the x-axis of the H-R diagram?
remains constant
decreases from left to right
increases from left to right
varies randomly
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Which of the following is true about stars in the main sequence?
they have exhausted the hydrogen in their cores
they spend the majority of their lifespans in this stage
they are in the final stage of their life
they are fusing helium into heavier elements
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Where are red giants positioned on the H-R diagram?
upper right section
lower left section
upper left section
lower right section
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Where are white dwarfs found on the H-R diagram?
lower right corner
lower left corner
upper left corner
upper right corner
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Which of the following best describes a star's journey across the H-R diagram?
it is not related to the star's lifecycle
it only occurs during the main sequence stage
it reflects the star's evolutionary path
it is a random process
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How can astronomers deduce a star's current stage of evolution?
by observing its movement across the H-R diagram
by measuring its distance from Earth
by calculating its mass
by determining its chemical composition
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Which stage of a star's life is represented by its position on the main sequence of the H-R diagram?
white dwarf stage
main sequence lifetime
protostar phase
red giant phase
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What happens to a star as it moves from the main sequence to the red giant phase on the H-R diagram?
it contracts and heats up
it expands and cools on the surface
it maintains its size and temperature
it collapses into a black hole
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Which of the following correctly describes the evolutionary path of a star on the H-R diagram?
main sequence → Red giant → White dwarf
red giant → Main sequence → White dwarf
white dwarf → Red giant → Main sequence
main sequence → White dwarf → Red giant
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Describe the three main regions of the H-R diagram and their corresponding stages of stellar evolution.
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