H-R Diagram

Front

What is the H-R Diagram?

Back

The H-R Diagram (Hertzsprung-Russell Diagram) is a scatter plot that shows the relationship between the luminosity (brightness) of stars and their surface temperatures.

Front

What does the H-R Diagram indicate about a star's life cycle?

Back

The H-R Diagram illustrates the stages of a star's life cycle, including its formation, main sequence phase, and eventual death as a red giant or supernova.

Front

What color are stars with the lowest surface temperatures?

Back

Red.

Front

What color are stars with the highest surface temperatures?

Back

Blue.

Front

What is the surface temperature of the Sun?

Back

Approximately 6,000 degrees Celsius.

Front

What does a star's position on the H-R Diagram tell us?

Back

It indicates the star's luminosity, temperature, and evolutionary stage.

Front

What type of stars are found in the main sequence of the H-R Diagram?

Back

Main sequence stars, which are in the stable phase of hydrogen burning.

Front

How does mass affect a star's lifespan?

Back

Smaller mass stars have a longer lifespan compared to larger mass stars.

Front

What is the relationship between a star's temperature and its color?

Back

Hotter stars emit blue light, while cooler stars emit red light.

Front

What is luminosity in the context of stars?

Back

Luminosity is the total amount of energy emitted by a star per unit of time, often measured in watts.