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WorksheetsIntroduction to Stars
Total questions: 72
Worksheet time: 38mins
Name
Class
Date
1.
Is the sun Earth's closest star?
a)
Yes
b)
Hot balls of gas (plasma)
2.
What are stars?
a)
Rocky bodies
b)
Hot exploding balls of gas (plasma)
c)
5 pointed shapes
d)
Hollywood actors
3.
What do all stars start out as?
a)
a Neutron Star
b)
a Supernova
c)
a Protostar in a Stellar Nebula
d)
a Yellow Main Sequence Star
4.
The colour of the star tells us its
a)
Composition
b)
Temperature
c)
Luminosity
d)
Mass
5.
The hottest colour star is
a)
Blue
b)
Orange
c)
Yellow
d)
Red
6.
Our star is a
a)
yellow / large star
b)
yellow / tiny star
c)
yellow / medium star
7.
The Moon shines because
a)
It reflects light from the Earth
b)
It emits its own light
c)
It reflects light from the Sun
8.
Which star has the lowest temperature?
a)
A
b)
B
c)
C
d)
D
9.
Which star is considered a Main Sequence Star?
a)
A
b)
B
c)
C
d)
D
10.
What colour star lives the longest?
a)
blue
b)
red
c)
yellow
d)
white
11.
This is the stage before a black hole?
a)
Supernova
b)
Neutron star
c)
White dwarf
d)
Black dwarf
12.
Which of the following stages is the earliest in the development of a star?
a)
dwarf
b)
neutron star
c)
protostar
d)
giant
13.
What stage of stellar evolution is the sun experiencing at this time?
a)
protostar
b)
main-sequence
c)
giant
d)
white dwarf
14.
TRUE OR FALSE: Massive stars have longer lives than smaller stars.
a)
False
b)
True
15.
______ is a force that causes dust particles to stick together in a nebula.
a)
Nuclear fusion
b)
Gravity
c)
Hydrogen
d)
Iron
16.
What is the process that occurs in the core of a star, like the sun, that produces energy?
a)
fission
b)
fusion
c)
decay
d)
convection
17.
What is the term used for a cloud of gas and dust?
a)
gas giant
b)
solar dust
c)
solar cloud
d)
nebula
18.
What will the Sun become at the end of its lifecycle?
a)
red giant
b)
red dwarf
c)
white dwarf
d)
super nova
19.
Low-mass stars eventually collapse into what final star remnant?
a)
Black holes
b)
Neutron stars
c)
White dwarfs
d)
Nebulae
20.
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
21.
Takes two small nuclei and combines them into a larger nucleus
a)
fission
b)
fusion
22.
What is not produced when light elements undergo nuclear fusion?
a)
Heavier elements
b)
Energy
c)
Lighter elements
d)
Light
23.
What is found on the x axis of an HR Diagram?
a)
Luminosity
(or brightness)
(or brightness)
b)
Temperature
c)
Star Size
d)
Distance
24.
Which is an example of a Main Sequence star?
a)
Betelgeuse
b)
our Sun
c)
Sirius B
d)
Polaris
25.
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
26.
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
27.
A blue star with a very large mass forms a supernova - what is left?
a)
white dwarf star
b)
black dwarf star
c)
black hole
d)
white hole
28.
Stars are formed in a large cloud of gas and dust called a
a)
cumulonimbus cloud
b)
nebula
c)
neutron star
d)
black hole
29.
A star spends most of its "life" as a
a)
Nebula
b)
Main Sequence star
c)
Red Giant
d)
White Dwarf
30.
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
31.
Which of these is destined to go through a Supernova stage?
a)
A massive star
b)
A binary star
c)
A white dwarf
d)
Our Sun
32.
What controls how long a star lives, where on the main sequence it lives, and how it dies?
a)
Its original mass
b)
Its original temperature
c)
Its original colour
d)
Its original luminsity
33.
According to science, where do all of the elements from Hydrogen to Iron form?
a)
core of a star
b)
big bang
c)
when stars collide
d)
nuclear bombs
34.
Why is it that our sun will never create Iron?
a)
not enough light
b)
not enough temperature & pressure
c)
not enough acceleration
35.
Stars must balance out what 2 forces?
a)
Gravity and Pressure
b)
Pressure and Space
c)
Space and Gravity
d)
Nuclear and Gravity
36.
The correct life cycle for a very large mass star is ...
a)
main sequence, red giant, white dwarf
b)
black hole, supernova, red giant, nebulae
c)
main sequence, red supergiant, supernova, black hole
d)
main sequence, red giant, supernova, neutron star
37.
Which type of star has the shortest life span?
a)
the smallest ones
b)
the middle sized ones
c)
the most massive ones
38.
What is creating the temperature-produced gas pressure that pushes outward from the core of the star?
a)
heat
b)
fusion
c)
meiosis
d)
main sequencing
39.
What are the final two stages of an average mass star?
a)
white dwarf - black dwarf
b)
neutron star - black hole
c)
supernova - neutron star
d)
pulsar - neutron star
40.
The distance that light travels in one year...
a)
Light year
b)
Quantum year
c)
Stellar-year
d)
1 million kilometres
41.
What is the graph that shows the relations between a star's surface temperature and luminosity?
a)
H-R Diagram
b)
Star Cluster Map
c)
Einstein's Diagram
d)
Newton's Chart of Stars
42.
In the diagram given, what happens as we move to the left?
a)
Stars Get Larger
b)
Stars get Colder
c)
Stars get Hotter
43.
Which star is the coldest?
a)
Yellow Star
b)
Red Star
c)
Orange Star
d)
Blue Star
44.
What else does the HR Diagram tell us besides the luminosity and temperature?
a)
Size and Colour
b)
Location and Distance from Earth
c)
Constellation structures
45.
What is this a picture of? Hint: A star is exploding.
a)
Main Sequence
b)
Nebula
c)
Supernova
d)
White Dwarf
46.
What 3 stages do all stars begin with?
a)
Nebula, Protostar, and Main Sequence
b)
Nebula, Main Sequence, and Supernova
c)
Protostar, Main Sequence, and Blackhole
d)
Main Sequence, Red Giant, and White Dwarf
47.
What is the correct order of the spectral classes from hottest to coldest
a)
OBAFGKM
b)
MKGFABO
c)
OFABGKM
d)
FBAKOMG
48.
The point in a star's evolution during which it maintains a stable nuclear reaction is
a)
Protostar
b)
Main Sequence
c)
White Dwarf
d)
Supernova
49.
As a star begins to die, it runs out of hydrogen and starts to fuse helium
a)
True
b)
False
50.
Which letter on the HR Diagram represents White Dwarfs?
a)
A
b)
B
c)
C
d)
D
51.
Which letter on the HR Diagram represents Red Giants?
a)
A
b)
B
c)
C
d)
D
52.
Which letter on the HR Diagram represents Red Super Giants?
a)
A
b)
B
c)
C
d)
D
53.
Which letter on the HR Diagram represents Main Sequence Stars?
a)
A
b)
B
c)
C
d)
D
54.
TRUE OR FALSE: Stars are really close together in outer space.
a)
True
b)
False
55.
Why do other stars appear so much smaller than the sun?
a)
They are much smaller
b)
They are so far away
c)
They are not as bright
d)
They are dwarf stars
56.
What is the main element in a Main Sequence stars composition?
a)
Hydrogen
b)
Helium
c)
Lithium
d)
Heavy Elements
57.
Which star has the lowest luminosity?
a)
A
b)
B
c)
C
d)
D
58.
On a HR Diagram, what kind of star would have a low temperature like 5000K and a luminosity of 102?
a)
Blue main sequence
b)
Red main sequence
c)
Blue giant
d)
Red giant
59.
The diagram shows a particular process.
Which of the following best describe this process?
Which of the following best describe this process?
a)
the birth of a star
b)
the birth of a universe
c)
the life cycle of a low-mass star
d)
the life cycle of a high-mass star
60.
Which of the following is the fusion occurring in our sun?
a)
lithium to beryllium
b)
helium to hydrogen
c)
hydrogen to helium
d)
helium to carbon
61.
During its main sequence life time, a star is kept from collapsing by
a)
attraction to other stars
b)
heat from fusion that produces gas pressure
c)
the fact that stars are made up of very lightweight hydrogen gas
d)
the weak nuclear force
62.
Stars up to 3 times the size of the sun end their life as a
a)
neutron star
b)
white dwarf
c)
black dwarf
d)
black hole
63.
Once a main sequence star begins to run out of hydrogen fuel it will become a ...
a)
white dwarf or black dwarf
b)
black hole or neutron star
c)
pulsar or super nova
d)
red giant or supergiant
64.
What is the next stage for an average mass star after it is a red giant?
a)
super giant
b)
black dwarf
c)
planetary nebula with white dwarf
d)
black hole
65.
What are the three things that can be left behind after a stars dies (depending upon its initial mass)?
a)
Planetary nebula, black hole, white dwarf
b)
Plasma circle, white dwarf, black hole
c)
White or black dwarf, black hole, neutron star
d)
White hole, brown dwarf, asteroid.
66.
As a whole, Giants are considered hotter than White Dwarfs.
a)
True
b)
False
67.
When the dying core of a star is surrounded by the gases it lost, we call it a...
Hint: Check the picture!
Hint: Check the picture!
a)
Black Hole
b)
Planetary Nebula
c)
Red Giant
d)
Black Dwarf
68.
The eventual type of star death depends on
a)
Colour
b)
Shape
c)
Mass
d)
Composition
69.
Which star below would most likely supernova into a black hole
a)
Star like our sun
b)
Star 5 times more massive than our sun
c)
Star 5 times less massive than our sun
d)
Star 2 times more massive than our sun
70.
The Earth, and everything on it is composed of star remnants.
a)
True
b)
False
71.
To get the sun to appear bigger in our sky, how would the distance between the sun and earth have to change?
a)
Earth would have to move closer to the sun
b)
Earth would have to move farther from the sun
72.
Red stars burn fuel very...
a)
Fast
b)
Slow
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