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WorksheetsStars and Stellar Evolution Review
Total questions: 17
Worksheet time: 26mins
When a star is born, which quality determines how long that star will spend on the Main Sequence?
Mass
Color
Spectral Class
Equilibrium
Which two qualities of a star are the MOST closely related? (ESRT - pg 4)
Luminosity and Color
Temperature and Color
Mass and Color
None of the Above
Which star would burn hydrogen the fastest?
a low-mass star
a high-mass star
an average star
a black hole
When is a star in equilibrium?
During the Nebula stage
When a black hole is beginning to form
When the forces of gravity and fusion are the same
During a Supernova
What force helps push a cloud of gas and dust together to eventually make a star?
Magnetism
Pressure
Gravity
Centrifugal Force
Which stars are the most likely to produce the heaviest elements?
Low Mass stars
Red Dwarfs
High Mass stars
All stars are capable
This event occurs when high mass stars explode - sending heavy elements back into space
A Black Hole
A Supernova
A Neutron Star
A White Dwarf
According to the HR Diagram (ESRT pg 4), as mass increases, _____________ also increases
Luminosity
Time spent on the Main sequence
Nothing
According to the Life Cycle of Stars (ESRT - Page 5), what factor best determines whether a star will become a black hole or a white dwarf
Color
Temperature
Mass
As an average sized star continues its life along the main sequence, which of the following is true?
Hydrogen decreases as helium increases
Iron decreases as helium increases
Helium decreases as hydrogen increases
Hydrogen and Helium remain equal
What is the next stage in the life cycle of our Sun?
White Dwarf
Blue Supergiant
Nebula
Red Giant
By comparing spectra observed from a star with the known emission lines (see ESRT pg 3), astronomers can determine the specific _______________present in a star.
Gravity
Elements
Luminosity
Solar Radius
At the very end of its life cycle, what will our Sun become?
A Black Hole
A White Dwarf
A Red Dwarf
A Neutron Star
You are an astronomer looking for planets that can support advanced life (like Earth). Which types of stars should you look near first?
Massive, high energy stars
Average sized, long living stars
Stars that will supernova and send out heavy elements needed for survival
Don't look near Stars.
What is the approximate temperature of our Sun?
22,000K
9,500K
3,200K
5,800K
Compared to our Sun, how much more luminous is the main sequence star Vega?
10 times
20 times
100 times
10,000 times
Which spectral class contains the hottest stars?
A
O
M
G
