Luminosity

Which measurement allows scientist to compare the brightness of stars?

• parallax
• absolute magnitude
• red shift
• corona

A plot of surface temperatures of stars against their absolute magnitude is called

• an H-R diagram
• constellation map
• a Cepheid variable
• spectrum.

Where are stars the most stable?

• Supergiant
• Main sequence
• White dwarf
• black dwarf

Stars are formed in a large cloud of gas and dust called a

• cumulonimbus cloud
• nebula
• neutron star
• black hole

What is responsible for bringing the particles together when a star is first born?

• Electrostatic Attraction
• Heat Energy
• Cosmic Radiation
• Gravity

Which star is considered a Main Sequence Star?

• A
• B
• C
• D

Which star has the lowest temperature?

• A
• B
• C
• D

Which star has the lowest luminosity?

• A
• B
• C
• D

A star is born and lit up  when ______ happens and provides the star with energy that it will use for millions of years.

• nuclear fusion
• gravity
• hydrogen
• iron

As a whole, Giants are considered hotter than White Dwarfs.

• True
• False