HR Diagram

The Hertzsprung – Russel diagram is a graph that shows the relationship between _______ and _______ Choose two!!!

• luminosity

• temperature

• apparent magnitude

• distance from Earth

The total measure of radiated electromagnetic power, the radiant power emitted by a light-emitting object

• Doppler effect

• luminosity

• apparent magnitude

• proper motion

A measure of the brightness of a star or other astronomical object observed from Earth.

• luminosity

• absorption spectrum

• apparent magnitude

• proper motion

What factor affects the color of the star?

• size

• temperature

• apparent magnitude

• luminosity

What factor affects the luminosity of the star?

• temperature

• distance from Earth

• size of the star

• age of the star

The surface temperature of a white dwarf is _________ than a red supergiant.

• the same

• higher

• lower

What is the color of the stars with the highest surface temperature?

• blue

• red

• white

• yellow

What is the color of the stars with the lowest surface temperature?

• orange

• white

• red

• blue

Most stars of the H-R diagram are classified as which type?

• red supergiant

• blue giant

• white dwarfs

• main sequence

What type of star has a high temperature but a low luminosity?

• blue giant

• white dwarf

• red supergiant

• main sequence