HR Diagram

Front

What determines the color of a star?

Back

The temperature of the star determines its color.

Front

Is the surface temperature of Red Giant stars higher or lower than Blue Giants?

Back

Lower.

Front

Red stars are the _____________.

Back

coolest.

Front

Which star has the lowest temperature?

Back

Star C.

Front

Which star is the hottest?

Back

Star D.

Front

What is the HR Diagram?

Back

The HR Diagram is a scatter plot of stars showing the relationship between their absolute magnitudes or luminosities versus their stellar classifications or effective temperatures.

Front

What does the x-axis of the HR Diagram represent?

Back

The x-axis represents the temperature of stars, usually decreasing from left to right.

Front

What does the y-axis of the HR Diagram represent?

Back

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

Front

What are the main regions of the HR Diagram?

Back

The main regions are the Main Sequence, Red Giants, Supergiants, and White Dwarfs.

Front

Where do most stars lie on the HR Diagram?

Back

Most stars lie on the Main Sequence.