8.8A H-R Diagram Mini Flashcard 3

Front

What is the Hertzsprung-Russell (H-R) diagram?

Back

A graphical tool that astronomers use to classify stars based on their brightness and temperature.

Front

What does the vertical axis of the H-R diagram represent?

Back

The vertical axis represents the luminosity (intrinsic brightness) of stars.

Front

What does the horizontal axis of the H-R diagram represent?

Back

The horizontal axis represents the surface temperature of stars, typically measured in Kelvin.

Front

Where are the hottest stars located on the H-R diagram?

Back

The hottest stars are located on the left side of the H-R diagram.

Front

What type of stars are found in the Main Sequence region of the H-R diagram?

Back

Main Sequence stars, which are in a stable phase of hydrogen burning.

Front

What is a supergiant star?

Back

A supergiant star is a very large and bright star that has a high luminosity and is located above the Main Sequence on the H-R diagram.

Front

What is a white dwarf?

Back

A white dwarf is a small, dense star that is the remnant of a star that has exhausted its nuclear fuel.

Front

How can the color of a star indicate its temperature?

Back

The color of a star is related to its temperature; hotter stars appear blue, while cooler stars appear red.

Front

What is the relationship between a star's brightness and its distance from Earth?

Back

A star's brightness can appear different depending on its distance; closer stars appear brighter than those farther away.

Front

What type of stars are typically found at the bottom left of the H-R diagram?

Back

White dwarfs are typically found at the bottom left of the H-R diagram.