WorksheetsTEKS 8.8A Universe and HR Diagram 5
Total questions: 20
Worksheet time: 28mins
Name
Class
Date
1.
Which celestial body is know for its intense pull of gravity?
a)
nebula
b)
black hole
c)
Super Giant
d)
A Galaxy
2.
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.
3.
Based on this diagram which type of stars would belong to spectral class M and have the lowest luminosity?
a)
Main Sequence Stars
b)
Giants
c)
Super Giants
d)
White Dwarfs
4.
Use the Hertzsprung Russell Diagram to answer the following question. How do the characteristics of Vega and Barnard's Star compare?
a)
Vega is cooler and less bright than Barnard's Star.
b)
Vega is hotter and brighter than Barnard's Star.
c)
Vega is cooler and brighter than Barnard's Star.
d)
Vega is hotter and less bright than Barnard's Star.
5.
Use the Hertzsprung Russell Diagram to answer the following questions. A star that is several thousand time brighter than the sun with a temperature lower than 5,000oC and is red.
a)
Betelgeuse
b)
Deneb
c)
Sirius B
d)
Barnard's Star
6.
Use the Hertzsprung Russell Diagram to answer the following questions. A star that is several thousand time brighter than the sun with a temperature higher than 6,000oC and is white.
a)
Betelgeuse
b)
Deneb
c)
Sirius B
d)
Barnard's Star
7.
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
8.
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
9.
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.
10.
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
11.
Alcor has a temperature of 11,000, what is its spectral class?
a)
Spectral Class O
b)
Spectral Class A
c)
Spectral Class G
d)
Spectral Class M
12.
What type of galaxy is this?
a)
Spiral
b)
Elliptical
c)
Irregular
d)
Irrational
13.
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
14.
The Hertzprung Russell Diagram consists of two axis that are labelled...
a)
Luminosity and Size
b)
Luminosity and Temperature
c)
Luminosity and Age
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.
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
17.
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
18.
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
19.
True or FalseThe Earth's Sun is classified as a main sequence star
a)
True
b)
False
20.
John observes three different colored stars. What can John infer about the three stars
a)
The three stars have different temperatures
b)
The three stars have the same temperatures
c)
The three stars have the same luminosity
d)
The three stars have different luminosity
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