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Stars Test Review

Total questions: 107

Worksheet time: 2hrs 47mins

Name
Class
Date
1.
This color of star is the coolest temperature
a)
Blue
b)
Green
c)
Red
d)
Yellow
2.
How bright a star appears from earth is called its....
a)
Absolute magnitude
b)
Apparent magnitude
c)
Brightness 
d)
Density 
3.
What triggers a main-sequence star becoming a red giant? 
a)
The star explodes
b)
Iron starts to form
c)
Runs out of helium
d)
Runs out of hydrogen 
4.
The HR Diagram shows: 
a)
Luminosity & Motion
b)
Absolute Motion & Temperature 
c)
Temperature & Apparent Motion
d)
Luminosity & Temperature
5.
What is the color of stars with the highest surface temperature? 
a)
Red 
b)
Yellow
c)
Blue
d)
White
6.

The lifetime of a star depends on its:

a)

temperature

b)

absolute brightness

c)

apparent brightness

d)

mass

7.

A star is born when:

a)

a nebula expands

b)

nuclear fusion starts

c)

helium and oxygen combine

d)

a protostar begins to school

8.

The brightness of a star depends on its:

a)

distance and temperature

b)

color and temperature

c)

distance and color

d)

size and temperature

9.

What color are the coolest stars?

a)

red

b)

blue-white

c)

orange

d)

yellow

10.

All stars begin as part of a large cloud of gas and dust called a(n):

a)

protostar

b)

nebula

c)

white dwarf

d)

super giant

11.

Most stars are in the _________ _________ stage of their life.

a)

white dwarf

b)

giant

c)

main sequence

d)

super giant

12.

The most massive stars collapse to form _________ when they die.

a)

white dwarfs

b)

giant

c)

super giant

d)

black holes

13.

Using the figure, name the star that is very dim and red in color.

a)

Barnard's Star

b)

Mira

c)

Betelgeuse

d)

Alpha Centauri A

14.

Name the stars on the diagram that are blue or blue-white.

a)

Algol, Van Maanen, and Deneb

b)

Canopus, Procyon, and Sun

c)

Mira, Betelgeuse, and Barnard's Star

d)

Algol, Regulus, and Spica

15.
The remnant of a giant star that has lost it's outer atmosphere is a
a)
Supergiant
b)
Nebula
c)
White Dwarf
d)
Planetary Nebula
16.
The most luminous, most massive stars, with diameters greaters greater than 100 times the diameter of the sun
a)
supergiant
b)
nebula
c)
white dwarf
d)
planetary nebula
17.
a halo of that is formed by the expelled layers of a star's atmosphere
a)
super giant
b)
nebula
c)
white dwarf
d)
planetary nebula
18.
a large cloud of gas in space
a)
super giant
b)
nebula
c)
white dwarf
d)
planetary nebula
19.
the brilliant burst of light that follows the collapse of the iron core of a massive star
a)
super nova
b)
neutron stars
c)
pulsar
d)
blackhole
20.
the super dense remains of a massive star that collapsed with enough force to push all of its electrons into the nuclei they orbit, resulting in a mass of neutrons
a)
super nova
b)
neutron star
c)
pulsar
d)
black hole
21.
the final life stage of an extremely massive star, with a gravitational field so intense that not even light can escape
a)
super nova
b)
neutron star
c)
pulsar
d)
black hole
22.
which object forms by the conctraction of a large sphere of gases causing the nuclear fusion of lighter elements into heavier elements?
a)
comet
b)
planet
c)
moon
d)
star
23.
the probable fate of our sun is
a)
to expand as a red giant, undergo a nova outburst and end as a white dwarf
b)
to shrink to a white dwarf then eventually expand to a red giant
c)
become hotter and expand to a blue supergiant
d)
to become a black hole
24.
What factor from the choices below determines whether a star will evolve into a white dwarf, a neutron star, or a black hole?
a)
percentage of helium
b)
mass
c)
percentage of carbon
d)
apparent brightness
25.
According to our present theories of stellar evolution, our sun will change next into
a)
a white dwarf
b)
a black hold
c)
a supernova
d)
a red giant
26.
What are the two most abundant elements in a main sequence star?
a)
carbon and heavy metals
b)
helium and carbon
c)
carbon and hydrogen
d)
hydrogen and helium
27.
How do stars like the sun create energy that is later radiated away into space?
a)
burning of carbon fuels
b)
changes in state such as melting and evaporation
c)
absorbing electromagnetic radiation form space
d)
nuclear fusion changing hydrogen into helium
28.
What is the single most important factor controlling the evolution of a star?
a)
mass
b)
rotation rate
c)
element composition
d)
temperature
29.

Which of the following is a cooled White Dwarf star?

a)

protostar

b)

brown dwarf

c)

black dwarf

d)

supernova

30.

A star is born when the gas and dust from a nebula become so hot that nuclear fusion starts.

a)

true

b)

false

31.

Where are stars born?

a)

The rings of saturn

b)

In other stars

c)

Solar Systems

d)

Nebulas

32.

What is the factor that determines the end of a stars lifecycle?

a)

Luminosity

b)

Temperature

c)

Location

d)

Mass

33.

What will our sun eventually become?

a)

A black hole

b)

A neutron star

c)

A pulsar

d)

A white dwarf

34.

In a low mass star what stage comes after the red giant phase?

a)

Main Sequence

b)

Planetary Nebula

c)

White Dwarf

d)

Protostar

35.

Where are red giants located on an HR Diagram

a)

Top Right (cool and bright)

b)

Bottom Right (cool and dim)

c)

Top Left (hot and bright)

d)

Bottom Left (hot and dim)

36.

Where are white dwarfs located on an HR Diagram?

a)

Top Right (cool and bright)

b)

Bottom Right (cool and dim)

c)

Top Left (hot and bright)

d)

Bottom Left (hot and dim)

37.

An HR Diagram show the relationship between which characteristics?

a)

temperature and luminosity

b)

luminosity and location

c)

location and age

d)

temperature and location

38.

When a red giant ejects its outer envelope what does it become?

a)

a supernova

b)

a black hole

c)

a planetary nebula

d)

a pulsar

39.
What does a star's color indicate?
a)
size
b)
age
c)
temperature
d)
shape
40.
The H-R diagram shows the relationship between a star's surface temperature and its ______________________.
a)
absolute magnitude
b)
apparent magnitude
c)
size
d)
shape
41.
Which of the following is the hottest?
a)
A red giant superstar
b)
A small, white dwarf star
c)
A main-sequence yellow star
d)
A main-sequence blue star
42.
On what part of the modern H-R diagram do cool, bright, red stars appear?
a)
top, right
b)
top, left
c)
bottom, right
d)
bottom, left
43.
What type of star has used up all of its hydrogen and is the leftover center of an older star?
a)
red giant
b)
supernova
c)
white dwarf
d)
main-sequence
44.
What is the diagonal pattern on the H-R diagram where most stars appear?
a)
main-sequence
b)
apparent magnitude
c)
black hole
d)
absolute magnitude
45.
What is an object so massive and dense that not even light can escape its gravitational pull?
a)
main-sequence
b)
apparent magnitude
c)
black hole
d)
absolute magnitude
46.
All stars start as gas and dust in a(n)
a)
nebula
b)
black hole
c)
red giant
d)
black dwarf
47.
After the main sequence, a low mass star becomes a
a)
black dwarf
b)
protostar
c)
red giant
d)
supergiant
48.
After the main sequence, a high mass star becomes a
a)
black dwarf
b)
protostar
c)
red giant
d)
supergiant
49.
After a supergiant, a high mass star explodes and forms a
a)
supernova
b)
red giant
c)
black hole
d)
planetary nebula
50.
A high mass star can end as this stage, which is so dense that not even light can escape!
a)
black dwarf
b)
white dwarf
c)
supernova
d)
black hole
51.
What stage fills in the blank. Nebula --> Main sequence --> red giant --> ______________ --> white dwarf --> black dwaft
a)
supergiant
b)
planetary nebula
c)
black hole
d)
supernova
52.
When a nebula heats up, a "baby" star forms in the middle. It is called a
a)
supernova
b)
supergiant
c)
white dwarf
d)
protostar
53.
Which of the following is NOT a final stage of a star. 
a)
black hole
b)
black dwarf
c)
neutron star
d)
red giant
54.
A star is born and lit up  when ______ happens and provides the star with energy that it will use for millions of years.
a)
nuclear fusion
b)
gravity
c)
hydrogen
d)
iron
55.
What color star lives the longest?
a)
blue
b)
red
c)
yellow
d)
white
56.
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
57.
What is the most dense type of star?
a)
brown dwarf star
b)
neutron star
c)
white dwarf star
d)
black dwarf star
58.
Why do stars collapse in on itself?
a)
Diamonds are starting to form in the core
b)
H2O2 starts to build up 
c)
It is exposed to too much radiation 
d)
Hydrogen runs out
59.
What are the three things that can be left behind after a stars dies?
a)
Planetary nebula, black hole, white dwarf 
b)
Plasma circle, white dwarf, black hole
c)
White dwarf, black hole, neutron star
d)
White hole, brown dwarf, asteroid.
60.
The stable period of a star’s life cycle is called... 
a)
The birth of a star
b)
Nebula 
c)
Neutron star
d)
Main Sequence 
61.
Gravity pulls gases and dust particles in space toward one another, squeezing them into a smaller and smaller space. The temperature at the center rises high enough for nuclear fusion of hydrogen to begin.
What stage in a stars life cycle is this describing? 
a)
The birth of a star
b)
The death of a star
c)
Black Hole
d)
Stellar Nebula
62.
Hotter stars appear to be what color? 
a)
Red
b)
Blue
c)
Yellow
d)
Green
63.
Cooler stars appear to be what color? 
a)
Red
b)
Blue
c)
Yellow
d)
Green
64.
What determines the color of a star? 
a)
It's size
b)
It's temperature
c)
It's composition
d)
They are all the same color 
65.
A star at the stage in its life cycle when it stops burning hydrogen, begins burning helium, and expands to a large, low-density star.
What stage in the life cycle does this describe? 
a)
Supernova
b)
Black Hole
c)
Main Sequence
d)
Red Giant or Red Supergiant
66.
In a large mass star, the temperature reaches more than 100 billion degrees. The repulsive forces between the iron nuclei explode the star’s mass into space in a ....
a)
Nebula
b)
Black Hole
c)
Supernova
d)
Neutron star
67.
Larger stars (stars with more mass) have a longer life cycle. 
a)
True
b)
False
68.
A relatively small, dense star at the end of its life cycle, which generates little or no energy and has contracted to its densest state.
What stage in the life cycle does this describe? 
a)
Black Hole
b)
Nebula
c)
White Dwarf
d)
Red Giant
69.
A large cloud of gas and dust in outer space ejected by an aging star near the end of its life cycle.
What stage in the life cycle is this describing? 
a)
Main Sequence
b)
Planetary Nebula
c)
Black Hole
d)
Neutron Star
70.
This is an image of the formation of a star, also known as a .... 
a)
Main Sequence
b)
Planetary Nebula
c)
Supernova
d)
Stellar Nebula
71.

All stars begin their life as a

a)

Main Sequence

b)

Nebula

c)

Protostar

d)

Black Dwarf

72.

The life cycles of stars are determined by their:

a)

mass (size)

b)

color

c)

distance from Earth

d)

how bright they are

73.
Our sun is currently in what star stage?
a)
Protostar
b)
Nebula
c)
Main Sequence
d)
Red Giant
74.
A gigantic explosion that causes the death of a large star is called
a)
pulsar
b)
red giant 
c)
supernova
d)
black hole
75.
The core of a Red Giant collapses and becomes a ___________________.
a)
White Dwarf
b)
Blue Supergiant
c)
Red Supergiant
d)
Black Hole
76.

The stage after the main sequence star:

a)

red giant

b)

nebula

c)

white dwarf

d)

black dwarf

77.

The super red giant ends its life as a massive explosion called

a)

supernova

b)

planetary nebula

c)

constellation

d)

black dwarf

78.

Neutron stars are very small and extremely dense

a)

true

b)

false

79.

Supernova happens after

a)

super red giant

b)

nebula

c)

protostar

d)

white dwarf

80.

Our sun will end its life as a black hole

a)

true

b)

false

81.

All stars begin their life as a white dwarf

a)

true

b)

false

82.

Our sun will end its life as a black dwarf

a)

true

b)

false

83.

Only the biggest stars in the universe can become black holes at the end of their life.

a)

true

b)

false

84.
In this stage, a star spends most of its life. Hydrogen is fused into helium at a temperature of millions of degrees.
a)
nebula
b)
protostar
c)
main-sequence
d)
supergiant
85.
Low mass stars expand into what after using up the hydrogen in their core
a)
red giants
b)
supergiants
c)
white dwarfs
d)
protostars
86.
This is a high mass star that is expanding and using energy at a fantastic rate
a)
Red giant
b)
Supergiant
c)
White dwarf
d)
Supernova
87.
A low mass star ends its life as a 
a)
Supernova
b)
Black hole
c)
White dwarf
d)
Nebula
88.
This stage is when a high mass star explodes
a)
Supergiant
b)
Red giant
c)
Supernova
d)
Black hole
89.
This is released from a red giant star when the star can't hold on to its outer layer
a)
Supernova
b)
White dwarf
c)
Black hole
d)
Planetary Nebula
90.
After a supernova, if the core is massive enough it can collapse into a...
a)
Black Hole
b)
White Dwarf
c)
Brown Dwarf
d)
Black Dwarf
91.
What is an exploding star?
a)
black hole
b)
Milky Way
c)
supernova
d)
solar system
92.

Large mass stars exist for a longer time than small mass stars.

a)

True

b)

False

93.
All H-R diagrams show what about stars?
a)
size and mass
b)
brightness and temperature
c)
name and location
d)
fusion of elements
94.
The most common elements stars are made of...
a)
Iron & Carbon
b)
Gold & Zinc
c)
Hydrogen & Helium
d)
Fire and Ice
95.
Our sun and most stars are in what stage of their life cycle?
a)
Planetary Nebula
b)
White Dwarfs
c)
Main Sequence
d)
Giants
96.
Mass of a star determines how long it "lives".
a)
True
b)
False
97.
On the H-R diagram the white dwarf stars are located where?
a)
top right
b)
top left
c)
bottom left
d)
bottom right
98.
A star in the center of the H-R diagram would have what kind of luminosity?
a)
no stars are in the center
b)
dim
c)
medium
d)
bright
99.

A star is born when:

a)

nuclear fusion starts

b)

a nebula becomes a protostar

c)

gases in a nebula condense

d)

hydrogen is used up in fusion processes

100.

When the core of a Red Giant collapses it becomes a:

a)

White Dwarf

b)

Supernova

c)

Red Supergiant

d)

Black Hole

101.

When a massive star begins to cool and expand it is known as a:

a)

Black Dwarf

b)

Red Giant

c)

Red Supergiant

d)

White Dwarf

102.

After a supernova, the core can collapse into a neutron star, or if massive enough it can become a:

a)

Black Hole

b)

White Dwarf

c)

Red Supergiant

d)

Black Dwarf

103.

When a Red Giant's outer atmosphere drifts away it is now known as:

a)

planetary cloud

b)

White dwarf cloud

c)

planetary nebula

d)

expanding nebula

104.

One possible outcome that is left after a supernova is a super dense core called a:

a)

Neutron Star

b)

White Dwarf

c)

Red Giant

d)

Black Dwarf

105.

A black hole is black because:

a)

there is nothing in it

b)

it is too small to see

c)

it is inherently evil

d)

even light cannot escape its gravity

106.
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
107.

What is a celestial body that is composed of gas and emits light from nuclear fusion reactions?

a)

Nebula

b)

Star

c)

Galaxy

d)

Planet

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