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WorksheetsTEKS 8.8A Universe HR Diagram 2
Total questions: 22
Worksheet time: 17mins
Name
Class
Date
1.
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
2.
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
3.
Which of the following best describes a galaxy? A galaxy is ---
a)
A particle of debris in the solar system that does not act as a satellite of any planet
b)
a visible body of liquid or frozen crystal droplets suspended above a planetary surface
c)
a massive system of stars, gas, dust and dark matter bound together by gravity.
d)
the visible path of a meteoroid as it enters Earth's atmosphere
4.
Use the Hertrzsprung-Russell diagram to answer the following question. A trend among the Main Sequence Stars is that
a)
most of the stars are white or red
b)
the hotter the star, the more brightly it burns
c)
stars dimmer than the sun are of Blue
d)
the larger stars emit light that is blue
5.
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
6.
Galaxies are classified into all of the following types by their shapes except --
a)
spiral
b)
elliptical
c)
lenticular
d)
crescent
7.
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
8.
A characteristic of a nebula is that it
a)
is at the center of the solar system
b)
is a region where stars are born
c)
forms halfway through a star's life cycle
d)
has the coolest temperature in space
9.
Use the Hertzsprung-Russell Diagram to answer the following question. Regulus belongs in which of the following classifications
a)
Super Giants
b)
Giants
c)
Main Sequence Stars
d)
White Dwarfs
10.
Which of the following components of the universe is best described as a system of stars, gases, and dust held together by gravity.
a)
a nebula
b)
a planet
c)
a meteor
d)
a galaxy
11.
Galaxies are classified by their shapes into all of the following types except
a)
spiral galaxy
b)
irregular galaxy
c)
oblong galaxy
d)
elliptical galaxy
12.
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
13.
Use the Hertzsprung-Russell Diagram to answer the following questions. In comparison to the Sun, Betelgeuse --
a)
is smaller in diameter
b)
is brighter and hotter
c)
is less bright but hotter
d)
is cooler and brighter
14.
Which of the following components of the universe is best described as an interstellar cloud of dust and gases where stars are formed?
a)
a nebula
b)
a planet
c)
a meteor
d)
a galaxy
15.
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
16.
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
17.
A Hertzsprung-Russell diagram is shown below.
Based on this diagram, which type of stars would belong to spectral class M and have the highest luminosity?
Based on this diagram, which type of stars would belong to spectral class M and have the highest luminosity?
a)
Main-sequence stars
b)
Giants
c)
White dwarfs
d)
Supergiants
18.
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.
19.
What type of galaxy is this?
a)
Spiral
b)
Elliptical
c)
Irregular
d)
Irrational
20.
The Hertzprung Russell Diagram consists of two axis that are labelled...
a)
Luminosity and Size
b)
Luminosity and Temperature
c)
Luminosity and Age
21.
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
22.
The Milky Way galaxy is described as a disk of stars orbiting a central point on the disk. Which of these best explains why people on Earth cannot see the entire shape of the Milky Way?
a)
Earth is a part of this galaxy
b)
Many more stars exist outside the galaxy
c)
The stars in the center of the galaxy are extremely small.
d)
The center of the galaxy consists of a dense cluster of stars.
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