WorksheetsUniverse Unit Test Review
Total questions: 41
Worksheet time: 33mins
Name
Class
Date
1.
Which type of galaxy is shaped like a pinwheel with spiral arms?
a)
spiral galaxy
b)
elliptical galaxy
c)
irregular galaxy
2.
Which type of galaxy has no definite shape?
a)
spiral galaxy
b)
elliptical galaxy
c)
irregular galaxy
3.
Which type of galaxy is shaped like an elongated sphere?
a)
spiral galaxy
b)
elliptical galaxy
c)
irregular galaxy
4.
The universe has may different components. Which list places four components of the universe in the most likely order from smallest to largest.
a)
Planets, Stars, Galaxies, Nebulae
b)
Nebulae, Stars, Planets, Galaxies
c)
Galaxies, Stars, Planets, Nebulae
d)
Planets, Stars, Nebulae, Galaxies
5.
A system of stars, gas, dust, and dark matter bound together by gravity is called ---
a)
an asteroid
b)
a nebula
c)
a galaxy
d)
a moon
6.
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
7.
The stars and all the other matter in a galaxy are held together by which of the following?
a)
Dark Matter
b)
Inertia
c)
gravity
d)
magnetism
8.
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
9.
Which of the following best describes a nebula. A nebula is
a)
a region in the solar system that is occupied by irregularly shaped bodies
b)
a large and icy celestial body with an irregular orbit around the Sun
c)
a natural satellite created by the collision of two large asteroids
d)
an interstellar cloud of dust, hydrogen, helium and other gases
10.
Why does Earth get more energy from the sun than from all the other stars in the universe combined?
a)
The sun is much larger than other stars.
b)
The sun is much hotter than the other stars.
c)
The sun is much more dense
d)
The sun is much closer than the other stars.
11.
The distance that light can travel in one year is called a...
a)
astronomical unit
b)
light year
c)
space travel
d)
time travel
12.
How long would it take light from the Sun to reach Mizar?
a)
73 light years
b)
73 years
c)
73 billion years
d)
7.3 years
13.
Proxima Centauri is the closest star to Earth after the Sun and is located 4.3 light years away from Earth. How long does it take light from Proxima Centauri to reach Earth?
a)
1 year
b)
4.3 years
c)
43 years
d)
10 trillion years
14.
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
15.
Which color of star is the coolest?
a)
Yellow Star
b)
Red Star
c)
Orange Star
d)
Blue Star
16.
Look at the H-R diagram. Which star is
sort of cool, dim (not too much light), and red?
sort of cool, dim (not too much light), and red?
a)
Betelguse
b)
Sirius B
c)
Procyon B
d)
Barnard's star
17.
What does the Hertzsprung-Russell diagram tell us about the star, Betelgeuse? (8.8A)
a)
It has a low surface temperature and high luminosity
b)
It has high surface temperature and high luminosity
c)
It has low surface temperature and low luminosity
d)
It has high surface temperature and low luminosity
18.
Which spectral class does our star, the sun, belong to?
a)
M
b)
K
c)
G
d)
F
19.
The Hertzsprung-Russell diagram is provided, which is used for classifying stars based on the relationship between their brightness and their temperature and color. Regulus belongs in which of the following classifications?
a)
Super Giants
b)
Giants
c)
Main Sequence Stars
d)
White Dwarfs
20.
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
21.
The Sun is a star in the Milky Way galaxy. Which location above best represents the location of the Sun? (8.8B)
a)
W
b)
X
c)
Y
d)
Z
22.
Stars are made mostly of which two elements?
a)
Selenium and sodium
b)
Astatine and arsenic
c)
Chlorine and cesium
d)
Hydrogen and helium
23.
A large celestial body made of gases that emits light due to nuclear reactions is called -
a)
a galaxy
b)
a nebula
c)
a comet
d)
a star
24.
An interstellar cloud of dust and gases that serves as a location for the formation of new stars is -
a)
a meteor
b)
a planet
c)
a galaxy
d)
a nebula
25.
Which of the following is an accurate description of the relationship between components of the universe?
a)
Stars always contain galaxies
b)
Galaxies contain many stars
c)
Stars contain several nebulae
d)
Nebulae contain many galaxies
26.
Hotter stars appear to be what color?
a)
Red
b)
Blue
c)
Yellow
d)
Green
27.
Cooler stars appear to be what color?
a)
Red
b)
Blue
c)
Yellow
d)
Green
28.
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
29.
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
30.
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?
What stage in the life cycle does this describe?
a)
Black Hole
b)
Nebula
c)
White Dwarf
d)
Red Giant
31.
A white dwarf is the final stage for _________ mass stars like our Sun.
a)
small/medium
b)
large
c)
super massive
32.
Which stage is NOT represented on the HR Diagram and is the final stage for super massive stars?
a)
White Dwarfs
b)
Neutron Stars
c)
Black Hole
d)
Black Dwarf
33.
Which type of electromagnetic radiation has the shortest wavelength?
a)
Radio Waves
b)
Visible Light
c)
Microwaves
d)
Gamma Rays
34.
Which type of visible light has the highest energy?
a)
Red
b)
Yellow
c)
Green
d)
Violet
35.
Which type of radiation has a frequency closest to 105?
a)
Radio
b)
Infrared
c)
Ultraviolet
d)
X-Ray
36.
Which type of electromagnetic radiation has a wavelength near 10-8?
a)
Microwave
b)
Infrared
c)
Visible
d)
Ultraviolet
37.
Which of the following types of radiation has the shortest wavelength and the highest frequency?
a)
Radio Waves
b)
Infrared
c)
Visible
d)
X-Rays
38.
If the wavelength of an electromagnetic wave is longer, what is true about the energy?
a)
Energy is higher.
b)
Energy is lower.
c)
Energy is not dependent on wavelength.
d)
energy is cancelled out
39.
Which part of the electromagnetic spectrum has high enough energy to cause damage to eyes and skin, and sometimes even cancer?
a)
infrared light
b)
visible light
c)
ultraviolet light
d)
microwaves
40.
The type of wave with the shortest wavelength and highest frequency. This type of wave is extremely harmful.
a)
radio
b)
infrared
c)
gamma
d)
x ray
41.
All waves carry
a)
energy
b)
light
c)
matter
d)
particles
100 %
