Name:_____________________________ Date:___________ Growth Goal:___________ Period:________________
Part 1 PRACTICE
DIRECTIONS: Use the diagram below to answer the following questions.
1. Which stars are the hottest yet the least bright? ____________________________________
2. Which stars have the greatest variety of both luminosity and temperature?
____________________________________________
3. Which type of star is shines more brightly: Super Giants or Red Giants? __________________
4. Which is hotter: A white dwarf or a red giant? ______________________________________
5. Which stars are usually very bright but also burn at a lower temperature?
______________________________________________________________________________
6. A Hertzsprung-Russell diagram organizes stars by what two characteristics?
__________________________________________ ________________________________________
7. According to the graph above, which stars are MOST likely to increase in brightness as they increase in
temperature?
A. Main sequence stars and red giants
B. Red giants and super giants
C. Super giants and white dwarfs
D. White Dwarfs and main sequence stars
8. According to the diagram, which of these types of stars is the brightest?
A. Hot white dwarf
B. Hot main sequence star
C. Cool Super Giant
D. Cool Red Giant
Name:_____________________________ Date:___________ Growth Goal:___________ Period:________________
Part 2 PRACTICE
Directions: Study the diagram below before circling the correct answer for each question. Number 1 is done for you.
1. Which is brighter?
Aldeberan
OR
2. Which is cooler?
Rigel OR
Mira
Betelgeuse
3. What is larger in size?
Polaris OR
Pollux
4. Which has a higher temperature?
Tau Ceti
OR
Procyon B
5. Which is hotter?
Regulus
OR
Deneb
6. Which is smaller in size?
Antares
OR
Sun
7. Which is hotter?
Zeta Eridani
Rigel
OR
Name:_____________________________ Date:___________ Growth Goal:___________ Period:________________
Part 3 PRACTICE
Directions: Study the diagram below to answer the questions that follow.
1. List the stars by decreasing brightness.
I.
II.
III.
IV.
A.
B.
C.
D.
E.
Procyon A
Betelgeuse
Arcturas
Sirius B
I, IV, III, II
II, III, I, IV
II, III, IV, I
II, I, III, IV
IV, I, III, II
2. List the stars by increasing temperature.
I.
II.
III.
IV.
A.
B.
C.
D.
E.
I, II, III, IV
IV, II, I, III
IV, III, II I
III, I, II, IV
III, IV, I, II
Canopus
Sirius B
Sun
Spica
3. Which answer choice contains one star of each color?
A. Spica, Altair, Polaris, Pollux, Proxima Centauri
B. B Centauri, Deneb, Polaris, Arcturas, Proxima
Centauri
C. Betelgeus, Aldebaran, Barnard’s Star, Procyon B
D. Rigel, Vega, Altair, Polaris, Pollux
E. Sirius B, Vega, Procyon A, Procyon B, Proxima
Centauri
4. Which of the following statements are supported by
the Hertzsprung-Russell Diagram shown above?
I.
Antares, Polaris, and Deneb are considered
Supergiants.
II.
B Centauri is the hottest Main Sequence star
shown in the diagram.
III.
Barnard’s Star is the same type of star as the
Sun, although the Sun is brighter and hotter.
IV.
In general, Giant stars are cooler yet brighter
than White Dwarf stars.
A. I only
B. II only
C. I, II, and IV
D. I, II, and III
E. I, II, III, and IV
Name:_____________________________ Date:___________ Growth Goal:___________ Period:________________
Part 4 PRACTICE
Directions: Study the diagram below to answer the questions that follow.
1. When white dwarf stars are compared to super giant
stars, white dwarfs have
I.
II.
III.
IV.
A)
B)
C)
D)
E)
I only
I and III
I and IV
II and III
II and IV
Higher luminosity
Lower luminosity
Cooler temperatures
Higher temperatures
2. What type of star would it be if it had a luminosity of
0.01 luminosity and a temperature of 15,000 K?
A)
B)
C)
D)
E)
Main sequence
White dwarf
Red giant
Super giant
Giant
3. Our Sun falls on the main sequence at a luminosity of
1. What is the temperature of our Sun?
A)
B)
C)
D)
E)
2,500 K
5,000 K
7,500 K
10,000 K
20,000 K
Name:_____________________________ Date:___________ Growth Goal:___________ Period:________________
Extension
Directions: The data table below contains information about a variety of stars, their
luminosity, and their surface temepratures. Plot the points of at least 4 stars of your choice
on the H-R diagram below. Be sure to label your plotted point with the correct symbol.