HR Diagram

Front

What are the three main types of galaxies?

Back

Spiral, Irregular, and Elliptical.

Front

What type of stars are the hottest?

Back

Blue stars.

Front

What is an example of a Main Sequence star?

Back

Our Sun.

Front

Which color of star is considered the coolest?

Back

Red star.

Front

What type of star is Barnard's star in terms of temperature and brightness?

Back

It is cool, dim, and red.

Front

What does the H-R diagram represent?

Back

The Hertzsprung-Russell diagram represents the relationship between the luminosity and temperature of stars.

Front

What is the significance of the Main Sequence on the H-R diagram?

Back

The Main Sequence is where stars spend most of their life cycle, fusing hydrogen into helium.

Front

How does the temperature of a star relate to its color?

Back

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

Front

What is the relationship between a star's luminosity and its size?

Back

Generally, larger stars are more luminous than smaller stars.

Front

What type of galaxy is characterized by a flat, rotating disk containing stars, gas, and dust?

Back

Spiral galaxy.