HR Diagram

Front

What is the main purpose of the H-R diagram?

Back

The H-R diagram is used to classify stars based on their luminosity, temperature, and evolutionary stage.

Front

What does the x-axis of an H-R diagram represent?

Back

The x-axis represents the temperature of stars, typically measured in Kelvin.

Front

What does the y-axis of an H-R diagram represent?

Back

The y-axis represents the luminosity of stars, often expressed in terms of the Sun's luminosity.

Front

What type of stars are found in the upper left corner of the H-R diagram?

Back

The upper left corner contains hot, luminous stars, often referred to as blue giants.

Front

What type of stars are found in the lower right corner of the H-R diagram?

Back

The lower right corner contains cool, dim stars, known as red dwarfs.

Front

What is a main sequence star?

Back

A main sequence star is a star that is in the stable phase of hydrogen burning, found along the diagonal band of the H-R diagram.

Front

What happens to a star's temperature as it moves left on the H-R diagram?

Back

As a star moves left on the H-R diagram, its temperature increases.

Front

What happens to a star's luminosity as it moves up on the H-R diagram?

Back

As a star moves up on the H-R diagram, its luminosity increases.

Front

What are red giants?

Back

Red giants are large, luminous stars that have expanded and cooled, found in the upper right of the H-R diagram.

Tags

NGSS.HS-ESS1-3

Front

What is the significance of blue stars on the H-R diagram?

Back

Blue stars are the hottest stars, indicating high temperatures and high energy output.