HR Diagram

Front

What is the Hertzsprung-Russell diagram?

Back

A graphical representation of stars that plots their luminosity against their temperature.

Front

What are the main categories of stars in the HR Diagram?

Back

The main categories are Main Sequence, Giants, Supergiants, and White Dwarfs.

Front

What does luminosity refer to in the context of stars?

Back

Luminosity is the total amount of energy emitted by a star per unit of time.

Tags

NGSS.HS-ESS1-1

NGSS.HS-PS4-3

Front

How is temperature measured on the HR Diagram?

Back

Temperature is measured in Kelvin and is plotted on the horizontal axis, decreasing from left to right.

Front

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

Back

Spiral galaxy.

Front

What is a characteristic feature of elliptical galaxies?

Back

They have an ellipsoidal shape and lack significant structure, with older stars and little gas.

Front

What type of stars are found in the Main Sequence category?

Back

Stars that are in the stable phase of hydrogen burning, including our Sun.

Tags

NGSS.HS-ESS1-1

Front

What is the significance of the Main Sequence in the HR Diagram?

Back

It represents the majority of stars, where they spend most of their lifecycle.

Front

What is a supergiant star?

Back

A very large star that is much brighter than a giant star, often at the end of its life cycle.

Tags

NGSS.HS-ESS1-3

Front

What is a white dwarf?

Back

A small, dense star that is the remnant of a low or medium mass star after it has exhausted its nuclear fuel.

Tags

NGSS.HS-ESS1-1