Astronomy Ultimate Trivia Quiz: MCQ Test!
What do you know about astronomy? Astronomy is a fascinating but complex subject. Professional astronomy is separated into observational and theoretical branches. Observational astronomy is concerned with obtaining information from observations of these celestial beings. The data is then analyzed using basic principles of physics. Theoretical astronomy is directed toward the creation of computer or analytical models to describe astronomical items and phenomena. This remarkable astronomy quiz will have you over the moon.
- 1.The region of the Sun that contains sunspots and granulation is the?
- A.
Photosphere
- B.
Lithosphere
- C.
Chromosphere
- D.
Corona
- 2.The region of the Sun that can be easily seen with the naked eye only during a total solar eclipse is the?
- A.
Photosphere
- B.
Lithosphere
- C.
Chromosphere
- D.
Corona
- 3.The region of the Sun that is 1.7 times hotter than the surface and is the PRIMARY source of ultraviolet (UV) radiation is the?
- A.
Photosphere
- B.
Lithosphere
- C.
Chromosphere
- D.
Corona
- 4.The surface temperature of the Sun is approximately?
- A.
4,900 K
- B.
5,800 K
- C.
6,200 K
- D.
6,800 K
- 5.When we observe the Sun in VISIBLE light, sunspots appear dark because
- A.
They are cooler than the surrounding photosphere by about 2,000 K
- B.
They are hotter than the surrounding photosphere by about 2,000 K
- C.
They provide evidence of carbon burning just below the solar surface
- D.
Their intense magnetic field lines absord visible light photons
- 6.A blackbody curve shows the wavelength peak of the Sun's radiation is in the middle of the ______ region of the electromagnetic spectrum.
- A.
Infrared
- B.
Radio
- C.
Ultraviolet
- D.
Visable
- E.
X-ray
- 7.The solar corona is so hot it emits MAINLY _______ radiation.
- A.
Infrared
- B.
Radio
- C.
Ultraviolet
- D.
Visible
- E.
X-Ray
- 8.The temperature of the Sun's _______ is about 15 x 10^6 K.
- A.
Sunspots
- B.
Corona
- C.
Core
- D.
Photosphere
- E.
Chromosphere
- 9.Solar ______ is a flow of energetic particles constantly streaming outward from the Sun.
- A.
Umbra
- B.
Wind
- C.
Prominence
- D.
Granulation
- 10.Solar ______ is the name given to a filament projecting OUTSIDE the limb of the Sun where we an see it against the black background of space. These filaments are huge and can last for days.
- A.
Umbra
- B.
Wind
- C.
Prominence
- D.
Granulation
- 11.The sunspot cycle AVERAGES about ______ years long.
- A.
5
- B.
11
- C.
15
- D.
23
- E.
28
- 12.At the center of the Sun, fusion converts hydrogen into
- A.
Plasma
- B.
Radiation and elements like carbon and nitrogen
- C.
Helium, energy, and neutrinos
- D.
All energy
- 13.Solar energy leaves the core of the Sun in the forms of
- A.
Photons
- B.
Rising hot gas
- C.
Sound waves
- D.
Gravity waves
- 14.Our Sun is of spectral type ___.
- A.
G
- B.
B
- C.
K
- D.
M
- E.
O
- 15.Fusion in the Sun works by the process known as the ______. [Hint: One of the answers is a fake.]
- A.
Carbon-nitrogen-oxygen (CNO) chain
- B.
Proton-proton chain
- C.
Triple alpha process
- D.
Proton-neutron chain
- 16.Which one of the following star types is MOST like the Sun? [Read the possible answers carefully!]
- A.
O dwarf
- B.
G9 supergiant
- C.
White dwarf
- D.
F9 dwarf
- 17.The magnitude a star would have if it were placed at a standard distance of 10 parsecs is its
- A.
Apparent magnitude
- B.
Absolute magnitude
- C.
Standard magnitude
- D.
Standard luminosity
- 18.A temperature-luminosity diagram of stars usually includes a diagonal band called the
- A.
Main line
- B.
H-R line
- C.
Main sequence
- D.
Color index
- 19.A binary star that varies in brightness as one component (Star A) passes in front of the other (Star B) is a(n)
- A.
Astrometric binary
- B.
Visual binary
- C.
Spectroscopic binary
- D.
Optical binary
- E.
Eclipsing binary
- 20.The MAIN value in the study of binary stars is the ability it gives astronomers to determine accurately the ______ of each star.
- A.
Color
- B.
Mass
- C.
Period
- D.
Size
- E.
Temperature
- 21.The period-luminosity relation applies to ______, supergiant stars that are very useful in measuring distances to nearby galaxies. (Hint: Polaris is an example)
- A.
Cepheid variables
- B.
Irregular variables
- C.
Eclipsing binaries
- D.
Mira variables
- 22.Star clusters with irregular shapes, composed of up to several thousand stars, and containing relatively young stars are called _____ clusters.
- A.
Globular
- B.
Standard star
- C.
Open
- D.
Closed
- 23.Star clusters with tight, spherical shapes composed of up to a million stars, and containing old stars and little gas are called ______ clusters.
- A.
Globular
- B.
Standard star
- C.
Open
- D.
Closed
- 24.When thermal pressure outward balances gravity's inward pull on the gas in a star, we call this condition ______ equilibrium.
- A.
Radiative
- B.
Convective
- C.
Oscillating
- D.
Hydrostatic
- 25.Low-mass stars (like the Sun) are born with _____ or FEWER solar masses.
- A.
1
- B.
2
- C.
4
- D.
5
- E.
8
Questions: 10 | Attempts: 10391 | Last updated: Dec 17, 2019
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