Stellar Evolution-Part 1 Pre-Quiz

Luminosity measures _____

• the size of a star
• the energy given off by a star
• the color of a star
• the age of a star

Apparent magnitude compares star _____ based on what we see.

• sizes
• distances
• ages
• brightnesses

Absolute magnitude compares star brightness if every star was the same distance away from us.

• True
• False

Spectral classification shows how a star's __________ and __________ are related.

• color and luminosity
• temperature and luminosity
• size and luminosity
• color and temperature

Most stars are identified as ___________ on an H-R Diagram?

• Supergiants
• Giants
• Main Sequence
• White Dwarf

Stars form in areas called __________.

• star farms
• planetary nebula
• stellar nebula
• nova

A _________ is almost a star.  It still needs to reach the temperature needed for hydrogen to form helium.

• protostar
• baby star
• star child
• nova

Once a star reaches the correct temperature for nuclear fusion to occur fusing 2 H to for 1 He, energy is released in the form of ________.

• heat
• gas
• light
• heat and light

Once a star uses up all of its _________, the star will begin to go into its death phase.

• light
• heat
• energy
• hydrogen

What determines if a star becomes a giant or a supergiant?

• star size
• star temperature
• star color
• star luminosity