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The document is a worksheet for an astronomy unit focused on creating and interpreting a Hertzsprung-Russell (H-R) diagram. It explains how to plot stars based on their color and absolute magnitude, indicating their temperature and luminosity. The worksheet includes a table of various stars with their corresponding colors and magnitudes, along with questions that guide students in analyzing the H-R diagram, identifying main sequence and giant stars, understanding the relationship between color and temperature, and recognizing characteristics of specific stars.

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What 90 percent of stars on the Hertzsprung Russell HR diagram are?

High-mass stars emit more energy and are hotter than low-mass stars on the main sequence. Main-sequence stars derive their energy from the fusion of protons to helium. About 90% of the stars lie on the main sequence.

What is the Hertzsprung-Russell diagram short answer?

The HertzsprungRussell diagram (abbreviated as HR diagram, HR diagram or HRD) is a scatter plot of stars showing the relationship between the stars absolute magnitudes or luminosities and their stellar classifications or effective temperatures.

What stage are 90% of stars in?

This stage is called the main sequence. Main-sequence stars are fusing hydrogen into helium. This nuclear fusion take place deep in the cores of stars. Stars spend about 90% of their lives in this stage.

What type of star are 90% of all stars?

Main sequence stars make up around 90% of the universes stellar population. They range in luminosity, color, and size from a tenth to 200 times the Suns mass and live for millions to billions of years.

What are 90% of all stars on the Hertzsprung-Russell diagram?

Schematic HR Diagram for Many Stars: Ninety percent of all stars on such a diagram fall along a narrow band called the main sequence. A minority of stars are found in the upper right; they are both cool (and hence red) and bright, and must be giants.

hertzsprung russell diagram answers

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What are 90% of the stars on the Hertzsprung-Russell diagram?

The most surprising thing about the H-R diagram was that the stars were not randomly scattered on it, but clustered in certain regions and along certain lines. The band that stretches across the diagram includes 90% of the stars in the night sky. This band is called the main sequence stars.

What is the Hertzsprung-Russell diagram Quizlet?

WHAT IS A HERTZSPRUNG-RUSSELL DIAGRAM? A diagram that shows the relationship or differences between SURFACE TEMPERATURE and LUMINOSITY of STARS.

How do you make an H-R diagram?

Plot the luminosity on the y-axis with brighter stars going toward the top. Since brighter stars have lower magnitudes, if you choose to plot magnitude on the y-axis, the values will decrease as you go up! Thats OK - just remember that the luminosity of the star is increasing. Plot temperature on the x-axis.