Stars/Sciences/Quiz

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 about the science of stars. It is also a mini-lecture for a quiz section as part of the 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

Point added for a correct answer:
Points for an incorrect 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

File:280557main oblate purplesun HI.jpg .

File:Wfullb.jpg .

.

.

File:Sun in X-rays Recovered.png .

File:Sun5GHz.jpg .

.

File:Neusun1 superk1.jpg .

.

.

File:Latest nsoHe.gif .

File:Blueberrysun friedman 1296.jpg .

File:Gamma sun1.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

Main resource: Hypotheses

1. SIMBAD records all the catalogs that contain a specific star.

See also

• Blue stars quiz
• Cyan stars quiz
• Green stars quiz
• Orange stars quiz
• Red stars quiz
• Violet stars quiz
• Yellow stars quiz

External links

• International Astronomical Union
• NASA/IPAC Extragalactic Database - NED
• NASA's National Space Science Data Center
• The SAO/NASA Astrophysics Data System
• SDSS Quick Look tool: SkyServer
• SIMBAD Astronomical Database
• SIMBAD Web interface, Harvard alternate
• Spacecraft Query at NASA
• Universal coordinate converter

{{Principles of radiation astronomy}}{{Radiation astronomy resources}}