Stars/Sciences/Quiz

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This is a Chandra X-ray Observatory image of the brown dwarf TWA 5B. Credit: NASA/CXC/Chuo U./Y. Tsuboi et al.

Stellar science is a lecture and an article about the science of stars. It is also a mini-lecture for a quiz section as part of the astronomy course on the principles of radiation astronomy.

You are free to take this quiz based on stellar science at any time.

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Quiz[edit]

Point added for a correct answer:   
Points for a wrong answer:
Ignore the questions' coefficients:

1 Which of the following is not a spectral class B star?

Spica
Tau Canis Majoris
Bellatrix
Rigel
Regulus
Achernar

2 Chemistry phenomena associated with a star are likely to be

at least three-quarters of the human genome
hydrogen gas
lithium gas
pressure
ions
plastic

3 Which of the following is not a spectral class A star?

Sirius A
Vega
Bellatrix
Deneb
Altair
Fomalhaut

4 Yes or No, The character, sign, or symbol ⊙ may represent the Sun.

Yes
No

5 Which of the following is not a stellar source?

Betelgeuse
Mercury
Regulus
Mira
Sirius B
Jupiter

6 True or False, Alpha Apodis is a known (SIMBAD) X-ray source.

TRUE
FALSE

7 Which of the following is not a spectral class F star?

Polaris
Alrakis
Bellatrix
Procyon
Canopus
Wezen

8 The standard condition for temperature and pressure is likely to be which of the following?

the Sun
1 atm
0 K
273.15 K
1 isobar

9 Complete the text:

A sample of 23 stars contained objects with (1) strong Be and strong B, (2) weak Be and strong , (3) strong and weak B, and (4) weak and .

10 Which of the following is not a spectral class G star?

Alpha Centauri A
Capella
Sun
Procyon
Tau Ceti
Kepler-22

11 True or False, The character, sign, or symbol ⊚, ⨀, ⦿, or ⊙ may represent Saturn.

TRUE
FALSE

12 Complete the text:

Match up the stellar image with the radiation astronomy:
meteor astronomy - A
neutrino astronomy - B
gamma-ray astronomy - C
X-ray astronomy - D
ultraviolet astronomy - E
visual astronomy - F
violet astronomy - G
blue astronomy - H
yellow astronomy - I
red astronomy - J
orange astronomy - K
infrared astronomy - L
radio astronomy - M
280557main oblate purplesun HI.jpg
.
Wfullb.jpg
.
Coronal Mass Ejection.gif
.
Sun image through solar telescope.jpg
.
Sun in X-rays Recovered.png
.
Sun5GHz.jpg
.
STEREO B EUVI 171.jpg
.
Neusun1 superk.jpg
.
Orange Sun in Boracay, Philippines.jpg
.
Sun920607.jpg
.
Latest nsoHe.gif
.
Blueberrysun friedman 1296.jpg
.
Gamma sun.jpg
.

13 Which of the following is not a spectral class K star?

Alpha Centauri B
Epsilon Eridani
Arcturus
Aldebaran
Tau Ceti
Algol B

14 Any object forming on a dynamical timescale, by gravitational instability, is a

15 Complete the text:

Match up the approximate luminosity class with each of the stellar class possibilities below:
0 - A
I - B
II - C
III - D
IV - E
V - F
VI - G
VII - H
giants .
supergiants .
white dwarfs .
main-sequence .
bright giants .
subdwarfs .
subgiants
hypergiants .

16 Which of the following is not a spectral class O star?

Alpha Camelopardalis
Tau Canis Majoris
Plaskett's star
Sirius A
Pistol Star
Zeta Puppis

17 Complete the text:

Match up the effective temperature with its spectral class:
O - A
B - B
A - C
F - D
G - E
K - F
M - G
L - H
T - I
Y - J
7,000 K .
2,000 K
15,000 K .
4,000 K .
400 K
9,000 K .
3,000 K .
5,500 K
45,000 K .
1,000 K

18 Which of the following is not a spectral class M star?

Betelgeuse
Antares
Proxima Centauri
Barnard's star
VY Canis Majoris
Algol B

19 Complete the text:

Match up the white dwarf classification with its distinctive characteristic:
DA - A
DB - B
DC - C
DO - D
DQ - E
DX - F
DZ - G
a helium-rich atmosphere, indicated He II spectral lines .
a helium-rich atmosphere, indicated He I spectral lines .
spectral lines are insufficiently clear to classify .
no strong spectral lines .
a metal-rich atmosphere .
a carbon-rich atmosphere
a hydrogen-rich atmosphere .

20 True or False, Regulus is a known (SIMBAD) X-ray source.

TRUE
FALSE

Hypotheses[edit]

Main source: Hypotheses
  1. SIMBAD records all the catalogs that contain a specific star.

See also[edit]

External links[edit]