Stars

Shows the relationship between luminosity and temperature in a star.

• HR (Hertzsprung - Russell) Diagram

• Color vs. Brightness chart

• Temperature vs. Luminosity chart

• Stellar life cycle chart

Which stage of the star life cycle does fusion occur and the star is most stable?

• Birth - protostar(s)

• Main Sequence - star

• Old Age - red giant

• Death - white dwarf

The color of a star depends on its

• size
• temperature
• shape
• magnitude

The brightness of a star as seen from Earth is its 

• apparent brightness.
• absolute brightness.
• parallax.
• reflective brightness.

Which property of a star is the brightness of a star at a standard distance?

• Apparent (magnitude) brightness
• Absolute (magnitude) brightness
• Luminosity
• Size of the star

As the _________ of a star increases, luminosity increases.

• size

• distance

• age

• composition

The teacher gave Carly a list of four stars of different colors. Carly used the graph shown above to help compare the stars’ luminosity.
Which star would have the highest luminosty? 

• White
• Red
• Blue
• Yellow

The teacher gave Carly a list of four stars of different colors. Carly used the graph shown above to help compare the stars’ luminosity. 
Based on the graph a star of whoich color most likely has the lowest luminosity? 

• Red
• Blue
• Yellow
• White

Our sun is a __- sized star.

• small

• medium

• large

• extra small

The Sun supplies __ and __ to Earth.

• light and heat

• gas and light

• gas and heat

• energy and gas