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WorksheetsLIFE CYCLE OF STARS
Total questions: 100
Worksheet time: 3hrs 18mins
Name
Class
Date
1.
What is a large celestial body that is composed of gas and that emits light?
a)
Nebula
b)
Star
c)
Galaxy
d)
Planet
2.
A collection of stars, dust, and gas bound together by gravity is...
a)
Universe
b)
Solar System
c)
Planet
d)
Galaxy
3.
The distance that light travels in one year...
a)
Light year
b)
Quantumyear
c)
Stellar-year
d)
1 million kilometers
4.
The sun and all of the planets and other bodies that travel around it make up our...
a)
Galaxy
b)
Solar System
c)
Cluster
d)
Constellation
5.
A large cloud of gas and dust in interstellar space; the birthplace of stars...
a)
Constellation
b)
Black hole
c)
Nebula
d)
Galaxy
6.
Lightyear is used by scientist to measure what?
a)
Distance
b)
Time
c)
Energy
d)
Temperature
7.
What is the graph that shows the relations between a star's surface temperature and absolute magnitude (brightness)?
a)
H-R Diagram
b)
Star Cluster Map
c)
Einstein's Diagram
d)
Newton's Chart of Stars
8.
The Hertzsprung Russell Diagram plots stars based on which two properties?
a)
Luminosity and Size
b)
Luminosity and Temperature
c)
Luminosity and Age
d)
Luminosity and Distance
9.
In the diagram given, what happens as we move to the left?
a)
Stars get larger
b)
Stars get colder
c)
Stars get hotter
d)
Stars get brighter
10.
Which of these stars is hottest?
a)
Red Star
b)
Yellow Star
c)
Orange Star
d)
Blue Star
11.
Which star is the coldest?
a)
Yellow Star
b)
Red Star
c)
Orange Star
d)
Blue Star
12.
What else does the H-R Diagram tell us besides the luminosity and temperature?
a)
Size, color and element make up
b)
Location and distance from Earth
c)
Constellation structures
d)
The type of galaxy
13.
Compared to the rest of the stars, our sun is considered...
a)
Extremely large and cold
b)
Small with a medium temperature
c)
Medium size with medium temperature
d)
Large and hot
14.
The category that contains the most stars is...
a)
Main Sequence
b)
Supergiants
c)
Giants
d)
White Dwarfs
15.
What size is our star?
a)
super large
b)
medium
c)
large
d)
extra large
16.
What color is our star?
a)
red
b)
blue
c)
white
d)
yellow
17.
What life cycle phase is our star currently in?
a)
white dwarf
b)
supergiant
c)
main sequence
d)
giant
18.
Where are all stars born
a)
in a nebula
b)
in a supernova
c)
in a black hole
d)
in a neutron star
19.
As a whole, Giants are considered hotter than White Dwarfs.
a)
True
b)
False
20.
Scientist use Light years to measure objects in space rather than units such as Miles or Kilometers because of how massive the Galaxy and Universe is.
a)
True
b)
False
21.
A planetary nebula is the stage in a stars life cycle when..
a)
Stars are born
b)
Stars expand and grow
c)
Stars begin to die and collaspe
d)
star is in its last stage of life cycle
22.
Why does the sun appear to be so much bigger than all the other stars from Earth?
a)
Because it is one of the biggest stars.
b)
Because it is the star that is closes to Earth
c)
It is the star that is farthest from Earth.
23.
What type of waves from the electromagnetic spectrum to scientist use to study a stars composition and temperature.
a)
Visible light waves
b)
X-rays
c)
Microwaves
d)
Gamma rays
24.
What color light to objects emit when they are moving toward earth.
a)
Blue
b)
Red
c)
green
d)
Yellow
25.
An irregular galaxy is...
a)
a galaxy that is shaped like a spiral
b)
a galaxy that is shaped like a flattened footbal
c)
a galaxy that has no defined shape.
26.
What type of galaxy is the Milky Way galaxy where we live?
a)
Spiral
b)
Barred-Spiral
c)
Elliptical
d)
Irregular
27.
Where is our solar system located in the Milky way galaxy?
a)
In the center
b)
Outside the galaxy
c)
In the arm near the edge of the galaxy
28.
According to the Hertzsprung Russell diagram, which of the following is true regarding Betelgeuse?
a)
Betelguese is brighter than the sun but much Hotter.
b)
Betelguese is brighter than the sun but much cooler
c)
Betelguese is dimmer than the sun but much Hotter.
d)
Betelguese is dimmer than the sun but much Hotter.
29.
What color are the hottest stars?
a)
Red
b)
Blue
c)
Yellow
d)
White
30.
If light takes 7 years to travel from Earth to Star X how far is Star x from Earth?
a)
9.5 trillion km
b)
7 light years
c)
Can't determine from the given information
d)
7 km
31.
Which of the following lists these words from smallest to largest?
a)
planet, moon, star, nebula, galaxy
b)
star, moon, planet, nebula, galaxy
c)
moon, planet, star, nebula, galaxy
d)
moon, planet, nebula, star, galaxy
32.
If a distant planet X is 9 light years away from the Sun, and a star is 10 times farther from the Sun than this planet X than how many light years is the star from the sun?
a)
90 trillion km
b)
10 billion km
c)
10 light years
d)
90 light years
33.
What does luminosity mean?
a)
Brightness
b)
Temperature
c)
Color
d)
Distance
34.
If a galaxy is moving away from Earth it will emit what color light?
a)
Red
b)
Blue
c)
White
d)
Yellow
35.
If an object in space is emitting light with longer wavelengths that means it is moving...
a)
Toward Earth
b)
Away From Earth
c)
it is not moving at all
36.
The category that contains the most stars is...
a)
Main Sequence
b)
Supergiants
c)
Giants
37.
Compared to the rest of the stars, our sun is considered...
a)
Extremely Large and Cold
b)
Small with a medium temperature
c)
Medium size with medium temperature
38.
What else does the H-R Diagram tell us besides the luminosity and temperature?
a)
Size, color and age
b)
Location and distance from Earth
c)
Constellation structures
39.
In the diagram given, what happens as we move to the left?
a)
Stars Get Larger
b)
Stars get Colder
c)
Stars get hotter
40.
The Hertzprung Russell Diagram consists of two axis that are labelled...
a)
Luminosity and Size
b)
Luminosity and Temperature
c)
Luminosity and Age
41.
Nebulae are considered "Stellar Nurseries" because...
a)
Planets are created from the gases
b)
Stars form from them
c)
Asteroids are formed from them
42.
Space and all the matter and energy in it is...
a)
Universe
b)
Galaxy
c)
Solar System
d)
Ecosystem
43.
What is the graph that shows the relations between a star's surface temperature and Luminosity called?
a)
H-R Diagram
b)
Star Cluster Map
c)
Einstein's Diagram
d)
Newton's Chart of Stars
44.
What is a large spherical body that orbits a star?
a)
Meteorite
b)
Black hole
c)
Planet
d)
Nebula
45.
A collection of stars, dust, and gas bound together by gravity is...
a)
Universe
b)
Solar System
c)
Planet
d)
Galaxy
46.
What is a large celestial body that is composed of gas and that emits light and heat by undergoing nuclear fusion?
a)
Nebula
b)
Star
c)
Galaxy
d)
Planet
47.
Which star has the lowest luminosity?
a)
A
b)
B
c)
C
d)
D
48.
Which star has the lowest temperature?
a)
A
b)
B
c)
C
d)
D
49.
Which star is considered a Main Sequence Star?
a)
A
b)
B
c)
C
d)
D
50.
Our Galaxy is called the
a)
Mily Galaxy
b)
Milky Way Galaxy
c)
Andromeda Galaxy
d)
Pinwheel Galaxy
51.
Why won't our sun ever become a black hole?
a)
It is too massive
b)
It is too old
c)
It is too young
d)
It is too small
53.
Which body in our solar system is classified as a star
a)
Haleys Comet
b)
Pluto
c)
The Sun
d)
Mars
53.
Which body in our solar system is classified as a star
a)
Haleys Comet
b)
Pluto
c)
The Sun
d)
Mars
54.
What stage comes directly before the "main sequence" in the life cycle of star?
a)
Cloud of Gas
b)
Red giant
c)
Protostar
d)
Shell of Gas
55.
What process takes place inside a star to generate energy
a)
Nuclear fission
b)
Hydrogen Creation
c)
Nuclear fusion
d)
Helium forming
56.
What is responsible for bringing the particles together when a star is first born?
a)
Electrostatic Attraction
b)
Heat Energy
c)
Cosmic Radiation
d)
Gravity
57.
What do the initial moments after the Big Bang have in common with the universe as it exists now?
a)
all the stars, galaxies, and planets that exist today were formed just a few moments after the Big Bang
b)
The universe back then could not sustain life, and it cannot sustain life now
c)
the universe was extremely hot then, and it is still extremely hot not
d)
the universe began expanding then, and it is still expanding today
58.
What were the original two elements in our universe?
a)
Lithium and Carbon
b)
Hydrogen and Neon
c)
Helium and Chlorine
d)
Hydrogen and Helium
59.
After a supernova of what used to be a blue star with a very large mass, what is left?
a)
white dwarf star
b)
black dwarf star
c)
black hole
d)
white hole
60.
What is found on the x axis of an H-R diagram?
a)
Luminosity
(or brightness)
(or brightness)
b)
Temperature
c)
Star Size
d)
Distance
61.
Which of these puts the main parts of an average star's life cycle in the correct order?
a)
protostar>
main sequence>
red giant >
white dwarf
main sequence>
red giant >
white dwarf
b)
protostar>
main sequence>
white dwarf>
red giant
main sequence>
white dwarf>
red giant
c)
main sequence>
protostar>
white dwarf>
red giant
protostar>
white dwarf>
red giant
d)
protostar>
red giant >
main sequence>
white dwarf
red giant >
main sequence>
white dwarf
62.
Why is the light from distant galaxies red-shifted?
a)
They produce more red light than nearby galaxies
b)
They are moving away from us
c)
The longer wavelengths are filtered out more by dust
d)
They are moving toward us
63.
What season is the Northern Hemisphere in at position 4?
a)
Winter
b)
Spring
c)
Summer
d)
Fall
64.
What season is the Southern Hemisphere in at position 1?
a)
Winter
b)
Spring
c)
Summer
d)
Fall
65.
What is the primary element that stars fuse early in their life cycle?
a)
Helium
b)
Dust
c)
Hydrogen
d)
Iron
66.
Which is not a property of stars
a)
Luminosity
b)
Color
c)
Mass
d)
Distance
67.
Our sun will supernova towards the end of its life cycle
a)
True
b)
False
68.
What type of star will die the fastest
a)
Medium Mass
b)
Low Mass
c)
High Mass
69.
The Earth, and everything on it is composed of star remnants.
a)
True
b)
False
70.
As a star begins to die, it runs out of hydrogen and starts to fuse helium
a)
True
b)
False
71.
Which letter on the H-R Diagram represents White Dwarfs?
a)
A
b)
B
c)
C
d)
D
72.
Which letter on the H-R Diagram represents Red Giants?
a)
A
b)
B
c)
C
d)
D
73.
Which letter on the H-R Diagram represents Red Super Giants?
a)
A
b)
B
c)
C
d)
D
74.
Which letter on the H-R Diagram represents Main Sequence Stars?
a)
A
b)
B
c)
C
d)
D
75.
What is the correct order of the spectral classes from hottest to coldest
a)
OBAFGKM
b)
MKGFABO
c)
OFABGKM
d)
FBAKOMG
76.
Put the stars in order from hottest to coolest.
a)
Blue, Red, White, Yellow, Orange,
b)
Red, White, Yellow, Orange, Blue
c)
Blue, White, Yellow, Red, Orange
d)
Blue, White, Yellow, Orange, Red
77.
True or False: Color gives a hint to the temperature of a star
a)
True
b)
False
78.
What is this a picture of?
a)
Main Sequence Star
b)
Nebula
c)
Protostar
d)
White Dwarf
79.
What element (METAL) causes the death of a high-mass star?
a)
Iron
b)
Hydrogen
c)
Steel
d)
Carbon
80.
What do we call the massive shockwave caused by a crushed supergiant star?
a)
Black Hole
b)
Neutron Star
c)
Supernova
d)
Main Sequence
81.
What 2 objects can be created from the core of a massive star?
a)
Neutron Star or Black Hole
b)
Neutron Star or White Dwarf
c)
Protostar or Main Sequence Star
d)
Red Giant or Main Sequence Star
82.
True or False: A Black Hole has so much gravity that not even light can escape.
a)
True
b)
False
83.
What is this a picture of? Hint: A star is exploding.
a)
Main Sequence
b)
Nebula
c)
Supernova
d)
White Dwarf
84.
Why do planets revolve around our sun, and not the other way around?
a)
This does not happen. The Earth is the center of the solar system.
b)
The Sun has more mass and gravity.
c)
Science has not figured it out yet.
d)
Because Mr. Bates says so.
85.
______ is the force that builds a Nebula (and runs the entire Universe).
a)
nuclear fusion
b)
gravity
c)
hydrogen
d)
iron
86.
Stars must balance what two forces?
a)
Gravity and Pressure
b)
Pressure and Space
c)
Gravity and Space
d)
Nuclear and Fusion
87.
During the Red Giant phase, gravity begins to crush the star. What happens when gravity begins to win?
a)
Fusion of helium begins
b)
The star loses its layers and expands
c)
The core gets crushed
d)
All of these are correct
88.
When the dying core of a star is surrounded by the gasses it lost, we call it a ____________.
Hint: Check the picture!
Hint: Check the picture!
a)
Black Hole
b)
Planetary Nebula
c)
Red Giant
d)
White Dwarf
89.
A White Dwarf star is the core of star made mostly of
a)
Electrons
b)
Neutrons
c)
Cheese
d)
Carbon
90.
After a white dwarf has burned out, it will become a ....
a)
black dwarf
b)
dead dwarf
c)
Dopey
d)
a black hole
91.
______ is a force that causes dust particles to stick together in a nebula.
a)
nuclear fusion
b)
gravity
c)
hydrogen
d)
iron
92.
The Main Sequence
a)
is the longest stage of a star's life cycle
b)
is the shortest stage of a star's life cycle
c)
is not a part of the star's life cycle
d)
is only part of the sun's life cycle
93.
Supergiants are at least ____ times bigger than the sun.
a)
10
b)
100
c)
1,000
d)
10,000
94.
A ___ is a star that expands and cools once it uses all of its hydrogen.
a)
white dwarf
b)
red giant
c)
neutron star
d)
black hole
95.
Which of the following can NOT be used to classify stars?
a)
Size
b)
Mass
c)
Brightness
d)
Shape
96.
Which of the following electromagnetic waves has the highest energy?
a)
radio waves
b)
x-rays
c)
infrared light
d)
visible light
97.
Which of the following electromagnetic waves has the lowest energy?
a)
radio waves
b)
x-rays
c)
infrared light
d)
visible light
98.
Which of the following electromagnetic waves allows astronomers to see into areas of new star formation?
a)
radio waves
b)
x-rays
c)
infrared light
d)
visible light
99.
Which portion of the electromagnetic spectrum includes the entire range of light that can be detected by the human eye?
a)
ultraviolet light
b)
visible light
c)
infrared light
d)
x-rays
100.
What process takes place inside a star to generate energy
a)
Nuclear fission
b)
Hydrogen Creation
c)
Nuclear fusion
d)
Helium forming
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