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WorksheetsUniverse Review
Total questions: 25
Worksheet time: 14mins
Which category does our Sun fit into?
White Dwarfs
Main Sequence
Red Giants
Red Supergiants
Where are stars formed?
Planetary Nebula
Supernova
Stellar Nebula
Black Holes
The life cycle of a star is determined by the star's _____________ when it is originally formed.
Temperature
Color
Luminosity
Mass
Where is the Sun located?
A spiral arm of the Milky Way galaxy
The center of the Milky Way galaxy
A spiral arm of the Andromeda galaxy
The center of galaxy M87
Where is the Sun placed on a H-R Diagram?
#1
#2
#3
#4
On the H-R Diagram, which position would represent a star that is very hot and very bright?
#1
#2
#3
#4
After a Red Giant star approaches the end of the phase it sheds its layers and the next star phase is called a...
Planetary Nebula
Supernova
Black Hole
Red Supergiant
A star that has expanded and become brighter, but has cooled down in temperature is most likely a ________________ star.
Blue supergiant
White dwarf
Red giant
Main sequence
Which answer choice correctly describes a black hole?
A dense star smaller than the size of earth
A region of dense matter with high gravity from which no light or matter can escape
An area of extremely high luminosity with very little density.
An explosion caused by a dying star
A star that is very large, very bright, but not very hot.
1
2
3
4
Which star is most similar to the Sun?
1
2
3
4
A star with a luminosity of 102 and a temperature around 5,200 K would be categorized in which group?
Red Giants
Blue Giants
Red Supergiants
Main Sequences
What type of galaxy is shown?
Spiral
Elliptical
Irregular
Square
What type of galaxy is shown?
Elliptical
Spiral
Square
Irregular
What type of galaxy is this?
Elliptical
Irregular
Spiral
Rectangular
Which star(s) would be categorized as main sequence? Select all that apply.
Luminosity of 102 , Temperature of 23,000 K
Luminosity of 10-2, Temperature of 20,000 K
Luminosity of 1, Temperature of 5,700 K
Luminosity of 102, Temperature of 4,500 K
List the components of the universe from smallest to largest...
planet, star, nebula, galaxy
galaxy, star, planet, nebula
nebula, star, planet, galaxy
galaxy, nebula, star, planet
Which star stage is generally the HOTTEST?
Supergiant
Giant
Main Sequence
White Dwarf
what color stars are the coolest?
red
white
blue
yellow
what color stars are the hottest?
red
blue
orange
green
Stars found in the top left of the HR Diagram can be described as
red, cool and dim
blue, hot and bright
yellow, hot and bright
white, cool and dim
Which star has the highest luminosity?
A
B
C
D
Which group of stars are considered very bright but are not very hot?
Area M
Area X
Area P
Area Z
