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Star Practice 1

Total questions: 70

Worksheet time: 1hrs 25mins

Name
Class
Date
1.
The frequency of infrared waves is..
a)
1012 Hz
b)
1020 Hz
c)
104 Hz
d)
1015 Hz
2.

What is the correct order of the visible light spectrum starting with the longer wavelength?

a)

Red, yellow, orange, blue, violet, indigo

b)

Violet, indigo, blue, green, yellow, orange, red

c)

Green, yellow, blue, indigo, red, orange

d)

Red, orange, yellow, green, blue, indigo, violet

3.

What is the correct order of the visible light spectrum starting with the longer wavelength?

a)

Red, yellow, orange, blue, violet, indigo

b)

Violet, indigo, blue, green, yellow, orange, red

c)

Green, yellow, blue, indigo, red, orange

d)

Red, orange, yellow, green, blue, indigo, violet

4.
What gases are in the unknown mixture?
a)
Gas B & Gas D
b)
Gas C & Gas B
c)
Gas A & Gas D
d)
Gas D & Gas C
5.

Which color has the longest wavelength?

a)

Yellow

b)

Red

c)

Green

d)

Purple

6.

Scientists observed a celestial object emitting a wavelength of 3 x 10-10m. What type of telescope did the scientists have to use to view this?

a)

Radio wave

b)

Infrared ray

c)

X-ray

d)

Gamma Ray

7.

Scientists observed a celestial object emitting waves with a frequency of 1.41 x 108 Hz. What type of telescope did the scientists have to use to view this object?

a)

Radio wave

b)

Microwave

c)

X-ray

d)

Ultraviolet wave

8.

The frequency of an x-ray is --

a)

1.41 x 10-10 Hz

b)

1.41 x 1018 Hz

c)

1.41 x 1010 Hz

d)

1.41 x 10-18 Hz

9.

The wavelength of an infrared ray is --

a)

10-5 m

b)

1012 Hz

c)

105 m

d)

10-12 Hz

10.

Scientists observed a celestial object emitting a wavelength of 3 x 103m. What type of telescope did the scientists have to use to view this?

a)

Radio wave

b)

Infrared ray

c)

X-ray

d)

Gamma Ray

11.
Select the correct order of waves on the EMS from the longest wavelength to the shortest wavelength
a)
Radio, Micro, Infra, Visible, Ultra, X-ray, Gamma
b)
Gamma, X-ray, Ultra, Vis, Infra, Micro, Radio
c)
Vis, Micro, Infra, Ultra, X-ray, Gamma, Radio
d)
Micro, Radio, Vis, Infra, Ultra, X-ray, Gamma
12.
Which has the SHORTEST wavelength and, therefore, the highest frequency/most energy
a)
Radio waves
b)
Ultraviolet Rays
c)
Gamma Rays
d)
X-rays
13.
The distance between two crests or two troughs of a wave is called:
a)
frequency
b)
amplitud
c)
wavelength
d)
hertz
14.

Which of the following electromagnetic waves has the lowest energy?

a)

infrared light

b)

visible light

c)

ultraviolet light

d)

x-rays

15.
How are electromagnetic waves different from other waves? 
a)
They have very short wavelengths 
b)
They transmit energy instead of matter 
c)
They can travel through empty space
d)
They can change direction by reflection 
16.
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
17.
Which color of star is the coolest?
a)
Yellow Star
b)
Red Star
c)
Orange Star
d)
Blue Star
18.
Stars are formed in a cloud of gas and dust called a - 
a)
nebula
b)
black hole
c)
white dwarf
d)
Super Giant
19.
Our solar system is located inside a galaxy called the _____________.
a)
Local Group
b)
Milky Way
c)
Andromeda
d)
Constellation
20.
Look at the H-R diagram. Which star is
sort of cool, dim (not too much light), and red?
a)
Betelguse
b)
Sirius B
c)
Procyon B
d)
Barnard's star
21.
Which fact about the SUN is FALSE?
a)
The sun is a medium sized star.
b)
The sun is near the center of a disc-shaped galaxy of stars.
c)
The sun is thousands of times closer to the Earth than any other star.
d)
The sun is about 2/3 of the way out from the middle of the Milky Way.
22.
Which is an example of a Main Sequence star?
a)
Betelgeuse
b)
our Sun
c)
Sirius B
d)
Polaris
23.
The HR Diagram shows a relationship of a star's surface temperature and its
a)
color
b)
size
c)
apparent magnitude
d)
absolute magnitude
24.

In ______________ ______________ stars, hydrogen atoms fuse into helium and energy is released in a process called fusion.

a)

supernova

b)

pulsar

c)

main sequence

d)

white dwarfs

25.

The best description of a super giant star would be -

a)

hot and bright

b)

hot and dim

c)

average brightness and temp

d)

cool and bright

26.

Our sun is one of billions of stars in the Milky Way galaxy; which is a _________________________ galaxy.

a)

elliptical

b)

spiral

c)

elongated

d)

irregular

27.

Galaxies are collections of gas, dust, and billions of stars held together by _________________.

a)

fusion

b)

gravity

c)

the big bang

d)

black holes nearby

28.
Energy is created in the core when two _____________ atoms join together to form a ______________ atom.
a)
helium, hydrogen
b)
carbon, hydrogen
c)
nitrogen, helium
d)
hydrogen, helium
29.

What is the best description of a nebula?

a)

a cloud of gas and dust that produce light due to fusion

b)

a large group of stars held together by gravity

c)

a star and planets held together by gravity

d)

a cloud of gas and dust where stars are formed

30.
Which star has the lowest temperature?
a)
A
b)
B
c)
C
d)
D
31.
Which spectral class does our star, the sun, belong to?
a)
M
b)
K
c)
G
d)
F
32.

What is the definition of luminosity?

a)

The darkness of a star

b)

The color of the star

c)

The shape of the star

d)

The brightness of a star

33.
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
34.
Which of the following best describes a star?  A star is a celestial body ---
a)
composed of rock and metal with a very high density
b)
that is too big to be an asteroid, but too small to be a planet.
c)
that rotates on an axis and revolves around the Sun
d)
composed of gases that emit light due to nuclear reactions
35.
Stars are made up mostly of which two elements?
a)
Hydrogen and Helium
b)
Mercury and Strontium
c)
Iron and Potassium
d)
Krypton and Bismuth
36.
Zeta Eridani has a temperature of 40,000 what is its spectral class?
a)
Spectral Class O
b)
Spectral Class A
c)
Spectral Class G
d)
Spectral Class M
37.
At 10,000 degrees Celsius, hydrogen begins to change into helium and energy is released in a process called
a)
supernova
b)
pulsar
c)
nuclear fusion
d)
nuclear fission
38.
All stars begin their life in a
a)
Main Sequence
b)
Nebula
c)
Protostar
d)
Black Dwarf
39.
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
d)
pulsar - neutron star
40.
The life cycles of stars are determined by their:
a)
mass (size)
b)
color
c)
distance from Earth
d)
luminosity
41.
______ is a force that causes dust particles to stick together in a nebula.
a)
nuclear fusion
b)
gravity
c)
hydrogen
d)
friction
42.
Most stars are made of which elements?
a)
Hydrogen only
b)
Hydrogen and Lithium
c)
Hydrogen and Sodium
d)
Hydrogen and Helium
43.
A gigantic explosion that causes the death of a large star is called
a)
pulsar
b)
red giant 
c)
supernova
d)
black hole
44.
A ________ is an object so dense with so much gravity that even light cannot escape.
a)
neutron star
b)
white dwarf
c)
blackhole
d)
black dwarf
45.
Which of the following list the correct order of the life cycle of massive stars?
a)
Nebula --> protostar --> main sequence --> red supergiant --> supernova --> blackhole
b)
Nebula --> protostar --> main sequence --> red giant --> planetary nebula --> white dwarf --> black dwarf
c)
Nebula --> protostar --> main sequence --> supernova --> red giant --> blackhole
d)
Nebula --> protostar --> blackhole --> red supergiant --> supernova --> main sequence
46.
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 
47.
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
48.
What fuel do stars use? 
a)
Oxygen
b)
Hydrogen
c)
Carbon
d)
Iron
49.
Larger stars (stars with more mass) have a longer life cycle. 
a)
True
b)
False
50.
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
51.
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
52.
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
53.
All H-R diagrams show what about stars?
a)
size and mass
b)
brightness and temperature
c)
name and location
d)
fusion of elements
54.
A star is born when it begins...
a)
nuclear fusion
b)
nuclear abrasion
c)
chemical reaction
d)
nuclear fission
55.
A white dwarf is the final stage for _________ mass stars like our Sun.
a)
small/medium
b)
large
c)
super massive
56.
Which type of stars are fusing Helium and heavier elements?
a)
Main Sequence
b)
White Dwarfs
c)
Blue Giants
d)
Red Giants
57.
A main sequence star is composed mostly of what gas?
a)
Hydrogen
b)
Helium
c)
Carbon
d)
Iron
58.
Main sequence stars will become red giants (or supergiants) when they run out of which fuel?
a)
Hydrogen
b)
Helium
c)
Neon
d)
Carbon
59.
The path a star takes during its life cycle depends solely on its _____.
a)
temperature
b)
luminosity
c)
mass
d)
location
60.
As the mass of a star increases, its life expectancy __________ because it burns fuel more rapidly.
a)
decreases
b)
increases
61.
A medium-mass star like our sun is expected to live for __________ years.
a)
10 Billion
b)
10 Thousand
c)
10 Million
d)
10 trillion
62.
A 'baby' star that is still gathering mass in a Nebula and has not begun fusion is called a ___________.
a)
Prototype
b)
Protostar
c)
Brown Dwarf
d)
White Dwarf
63.
Low to Medium mass stars like our Sun will not explode in a Supernova because they do not have enough mass. They will 'puff off' their outer layers of gas leaving a __________ nebula behind.
a)
planetary
b)
supernova remnant
c)
shockwave
d)
black hole
64.

Which star would have the longer life span?

a)

main sequence

b)

blue giant

65.
When our Sun becomes a Red Giant, it will engulf _______.
a)
just Mercury
b)
all the inner planets.
c)
the entire solar system
d)
just Mercury and Venus
66.

What is this called?

a)

Constellation Diagram

b)

Star Size Diagram

c)

Stellar Plot Diagram

d)

Hertzsprung Russell Diagram

67.

What does this axis represent?

a)

Brightness

b)

Size

c)

Temperature

d)

Density

68.

What does this axis represent?

a)

Temperature

b)

Size

c)

Density

d)

Brightness

69.

What is another term used for a star's brightness?

a)

Lucidity

b)

Luminosity

c)

Lightity

d)

Luridity

70.
How did the elements we have on Earth get here?
a)
They are all man-made.
b)
They were formed in stars that eventually exploded in supernova.
c)
The sun created all of our elements through fusion.
d)
Elements blew to earth through solar wind.

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