Hertzsprung-Russell Diagrams
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Objective
I can use an H-R diagram to classify stars and infer their properties, such as age and evolutionary stage.
Part 1 of 3
Warm-up video
Professor Dave Explains · 7:05Vetted channel
We don't generate video — this one is by Professor Dave Explains on YouTube. The practice questions and exit ticket below were drafted by AI for this objective, and every question is editable in the teacher guide.
Part 2 of 3
Practice
7 questions
Explain the Harvard classification system for stars (OBAFGKM). What property of stars does this classification primarily describe?
Describe the axes of a Hertzsprung-Russell (H-R) diagram. What do the horizontal and vertical axes represent?
Part 3 of 3
Exit ticket
Quick comprehension check
“A star has a high luminosity and a low temperature. On an H-R diagram, where would this star be located, and what type of star is it likely to be? A star is located on the main sequence and is very hot and luminous. What color is this star likely to be, and how does its size compare to that of our Sun? ”
Sample answer included in the free materials
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