Luminosity of Stars

What is another word for luminosity?

• brightness

• temperature

• color

• fusion

What type of star is our sun and Alpha Centauri?

• white dwarf
• main sequence
• red giant
• neutron star

Identify a star that is approximately 100,000 X brighter than the sun.

• Polaris

• Eridani B

• Bernard's Star

• Rigel

Which star has a luminosity that is .01 that of the sun and a temperature around 17,000K?

• proxima centauri

• Rigel

• Eridani B

• Spica

What is the relationship between temperature and luminosity for Main Sequence stars?

• There is no relationship between those two variables for main sequence stars.

• As temperature increases, luminosity increases.

• As temperature increases, luminosity decreases.

• As temperature increases, luminosity stays the same.

Which two characteristics determine the "life path" that a star will "travel"?

• the type of fuel it has

• it's luminosity

• original size and mass

• it's temperature

Through which process do stars radiate energy into space?

• luminosity

• radioactive decay

• nuclear fission

• nuclear fusion

From which do all stars originate?

• Black Hole

• Stellar Nebula

• Supernova

• Planetary Nebula

Use the chart to state what type of star our sun will be towards the end of it's "life."

• Red Giant

• Black Hole

• White Dwarf

• Neutron Star

Which is the most massive star shown on the diagram?

• Proxima Centauri

• 40 Eridani B

• Deneb

• Rigel