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Life Cycle of Stars Review 2

Total questions: 61

Worksheet time: 41mins

Name
Class
Date
1.
A star is born when ________________ begins to happen.
a)
nuclear fusion
b)
nuclear abrasion
c)

nuclear fisson

2.
Larger, cooler stars are called ___________.
a)
Blue Giants
b)
White Dwarfs
c)
Red Giants
3.
The core of a Red Giant collapses and becomes a ___________________.
a)
White Dwarf
b)
Blue Supergiant
c)
Black Hole
4.
When the core of a Red Supergiant collapses, a bright event known as a ___________ occurs.
a)
supernova
b)
big bang
c)
black hole
5.
After a supernova, the core can collapse into a neutron star, or if massive enough even a ___________.
a)
Black Hole
b)
Brown Dwarf
c)
Black Dwarf
6.
In the diagram given, what happens as we move to the left?
a)
Stars Get Larger
b)
Stars get Colder
c)
Stars get hotter
7.
Which star is the coldest?
a)
Yellow Star
b)
Red Star
c)
Orange Star
8.
Which category is our Sun located in?
a)
White Dwarfs
b)
Supergiants
c)
Main Sequence
9.
The stable period of a star’s life cycle is called... 
a)
The birth of a star
b)
Neutron star
c)
Main Sequence 
10.
What determines the color of a star? 
a)
It's size
b)
It's temperature
c)
They are all the same color 
11.

What is a light year?

a)

How far light travels in a year.

b)

How long it takes light to die out.

12.

Why do other stars appear so much smaller than the sun?

a)

They are actually much smaller

b)

They are so far away

c)

They are not as bright

13.
Which star is closest to Earth?
a)
Orion
b)
the sun
c)
Antares
14.

Most stars are made of which gases?

a)

Hydrogen only

b)

Hydrogen and Sodium

c)

Hydrogen and Helium

15.
The life cycles of stars are determined by their:
a)
mass (size)
b)
color
c)
distance from Earth
16.

According to the diagram, the life-cycle path followed by a star is determined by the star's initial

a)

mass and size

b)

luminosity and structure

17.

A star is 10,000 degrees and has a luminosity of 100,000 times greater than our Sun. What classification is this star?

a)

White Dwarf

b)

Main Sequence

c)

Giant

d)

Supergiant

18.
Which letter on the H-R Diagram represents White Dwarfs?
a)
A
b)
B
c)
C
d)
D
19.
The only force acting on the nebulae is ________.
a)
thermal
b)
gravity
c)
microscopic
20.
One possible outcome that is left after a supernova is a super dense core called a _____________.
a)
neutron star
b)
Yellow Star
21.
Late stage in the life cycle of a massive star in which the core heats up, heavy elements form by fusion and the star expands.
a)
Steady State Theory
b)
Doppler Shift 
c)
Supergiant 
22.
What are the final two stages of a medium mass star?
a)
white dwarf - black dwarf
b)
neutron star - black hole
c)
supernova - neutron star
23.

In which sequence are the celestial objects correctly listed in order from the smallest mass to the largest mass?

a)

Saturn, solar system, Milky Way, universe

b)

Milky Way, Saturn, solar system, universe

24.

What is the final stage of a low mass star?

a)

White Dwarf

b)

Black Hole

c)

Red Giant

d)

Neutron Star

25.

What is the final stage of a high mass star?

a)

White Dwarf

b)

Black Hole

c)

Red Giant

d)

Neutron Star

26.

Which star is likely to be the hottest? Use the H-R diagram

a)

Type B Star

b)

White Dwarf

c)

Red Giant

d)

Type G Star (Sun)

27.

Which mass of star will have the shortest life span?

a)

Low Mass Star

b)

Medium Mass Star

c)

High Mass Star

d)

Very High Mass Star

28.

A stellar nebula will eventually condense into a hot ball of mostly hydrogen called a __________. At this point, nuclear fusion has not yet started but it will soon.

a)

Protostar

b)

White Dwarf

c)

Brown Dwarf

d)

Main Sequence

29.

What is the final stage of a low mass star?

a)

White Dwarf

b)

Black Hole

c)

Red Giant

d)

Neutron Star

30.

What is the final stage of a high mass star?

a)

White Dwarf

b)

Black Hole

c)

Red Giant

d)

Neutron Star

31.

What is the final stage of a very high mass star?

a)

White Dwarf

b)

Black Hole

c)

Red Giant

d)

Neutron Star

32.

Which star is likely to be the hottest? Use the H-R diagram

a)

Type B Star

b)

White Dwarf

c)

Red Giant

d)

Type G Star (Sun)

33.

Which mass of star will have the shortest life span?

a)

Low Mass Star

b)

Medium Mass Star

c)

High Mass Star

d)

Very High Mass Star

34.

What is the name of the cosmic cloud of dust and gas that is the first stage in the birth of a star?

a)

Protostar

b)

Spiral Galaxy

c)

Quasar

d)

Stellar Nebula

35.

In a very high mass star, a supernova triggers the formation of a __________ which has a gravitational pull so strong that even light cannot escape.

a)

White Dwarf

b)

Neutron Star

c)

Stellar Nebula

d)

Black Hole

36.

Which elements are found in a main sequence star?

a)

Hydrogen (H)

b)

Helium (He)

c)

Carbon (C)

d)

Oxygen (O)

37.

Which is one of the heaviest element found in a red giant star?

a)

Nitrogen (N)

b)

Iron (Fe)

c)

Sulfur (S)

d)

Magnesium (Mg)

38.

Has a higher temperature during it's main sequence phase.

a)

Low mass stars

b)

High mass stars

39.

Spends a longer time in it's main sequence phase.

a)

Low mass stars

b)

High mass stars

40.

Creates elements heavier than Fe

a)

Low Mass Stars

b)

High Mass Stars

41.

Process stars make light and energy

a)

Fission

b)

Fusion

c)

Confusion

d)

Diffusion

42.

Fusion means .......

a)

join heavier elements to lighter elements

b)

stick elements together randomly

c)

join lighter elements into heavier elements

43.

Massive stars and super massive stars end their lives as..............., respectively

a)

Black holes and black dwarfs

b)

neutrons stars and black holes

c)

white dwarf and black dwarf

44.

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

45.

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

46.
A diagram or graph that shows the relationship between luminosity and temperature in a star.
a)
HR (Hertzsprung - Russell) Diagram
b)
Color vs. Brightness chart
c)
Temperature vs. Luminosity chart
d)
Stellar life cycle chart
47.

Stars are formed from big clouds of gas and dust is known as:

a)

dust cloud

b)

space fog

c)

neutron clouds

d)

nebulae

48.

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

49.

A star that has begun nuclear fusion will last for:

a)

millions or even billions of years

b)

a few thousand years

c)

as long as the universe survives

d)

forever

50.
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
51.
Which layer of the sun is the hottest?
a)
Photosphere
b)
Chromosphere
c)
Corona
d)
Core
52.
What is the hottest layer of the sun’s atmosphere called?
a)
convective zone
b)
corona
c)
radiative zone
d)
photosphere
53.
a dark spot on the photosphere of the sun
a)
corona
b)
solar flare
c)
sunspot
d)
magnitude
54.
brightness of stars
a)
galaxy
b)
magnitude
c)
photosphere
d)
corona
55.
Identify part 1.
a)
corona
b)
photosphere
c)
core
d)
radiation zone
56.
Identify part 3.
a)
corona
b)
convection zone
c)
core
d)
radiation zone
57.
Identify part 4.
a)
photosphere
b)
convection zone
c)
core
d)
radiation zone
58.
Identify part 7.
a)
sunspot
b)
solar flare
c)
corona
d)
radiation zone
59.

What are the inner layers of the Sun?

a)

Core, Radiative zone, and Convection zone.

b)

Crust, mantle, and core.

c)

Core, Photosphere, and Radiative Zone.

d)

The Sun doesn't have inner layers.

60.

What are the outer layers of the Sun?

a)

The Sun has only inner layers.

b)

Photosphere, Chromosphere, and Corona.

c)

Core, Radiative zone, and Convection zone.

d)

Crest, Corona, Mantle.

61.

Why is the sun brighter then other stars?

a)

Its bigger

b)

Its yellow

c)

Its closer to Earth

d)

Its hotter then other stars

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