Radiation astronomy/Ultraviolets/Quiz

From Wikiversity
Jump to navigation Jump to search
This image shows how the Earth glows in the ultraviolet. Credit: NASA.{{free media}}

Ultraviolet astronomy is a lecture and an article as part of the astronomy course on the principles of radiation astronomy.

You are free to take this quiz based on ultraviolet astronomy at any time.

To improve your score, read and study the lecture, the links contained within, listed under See also, External links, and in the {{principles of radiation astronomy}} template. This should give you adequate background to get 100 %.

As a "learning by doing" resource, this quiz helps you to assess your knowledge and understanding of the information, and it is a quiz you may take over and over as a learning resource to improve your knowledge, understanding, test-taking skills, and your score.

Suggestion: Have the lecture available in a separate window.

To master the information and use only your memory while taking the quiz, try rewriting the information from more familiar points of view, or be creative with association.

Enjoy learning by doing!

Quiz[edit | edit source]


1 Complete the text:

Ordinary glass is partially

to UVA but is

to shorter wavelengths, whereas silica or

glass, depending on quality, can be

even to vacuum UV wavelengths.

2 Complete the text:

The First Byurakan Survey commenced in 1965 using the

telescope at the Byurakan Astrophysical Observatory. The purpose of the survey was to find galaxies with an


3 Which of the following is associated with the ultraviolet?

black light
Charles Stuart Bowyer
Hα emission
PG 1159

4 Venus is not known historically for which of the following?

being in orbit around the Sun in 10,000 b2k
imaged by the Magellan probe
a gas dwarf when viewed in the ultraviolet
almost as large as the Earth
may have appeared comet-like in human memory
having a high surface temperature

5 True or False, The surface of the Sun is readily imaged in the ultraviolet.


6 Complete the text:

Match up the radiation letter with each of the detector possibilities below:
Optical rays - L
Visual rays - M
Violet rays - N
Blue rays - O
Cyan rays - P
Green rays - Q
Yellow rays - R
Orange rays - S
Red rays - T
multialkali (Na-K-Sb-Cs) photocathode materials



broad-band filter centered at 404 nm


thallium bromide (TlBr) crystals


18 micrometers FWHM at 490 nm

wide-gap II-VI semiconductor ZnO doped with Co2+ (Zn1-xCoxO)


7 Yes or No, When Venus is viewed in the ultraviolet, its color appears brownish.


8 Complete the text:

The spectral region bounded on the long wavelength side by the atmospheric

absorption and on the short wavelength side by the photoionization of interstellar

is the ultraviolet.

9 True or False, The temperature for a lightning bolt channel has a peak emittance in the far ultraviolet.


10 Complete the text:

To measure the color index, observe the magnitude of the object successively through two different filters such as

and blue (B), or blue and


11 Complete the text:


series is the series of transitions and resulting ultraviolet emission lines of the

atoms as an electron goes from a high-energy level to an n =


12 Complete the text:

Match up the object viewed in the ultraviolet with its image:
Sun's chromosphere- L
calcite - M
Venus - N
Jupiter's aurora - O
Jupiter - P
Io - Q
Saturn - R
Betelgeuse - S
Mira - T
LAB-1 - U
Messier 101 - V


Mira the star-by Nasa alt crop.jpg


Aurora Saturn.jpg


Lyman-alpha blob LAB-1.jpg

Betelgeuse star hubble-580x580.jpg

Hubble Space Telescope Image of Fragment BDGLNQ12R Impacts.jpg

Calcite LongWaveUV HAGAM.jpg

M101 UIT.gif


13 True or False, The first direct observation of waves propagating into and through the solar corona was made in 1997 with the SOHO space-borne solar observatory.


14 Which of the following radiation phenomena are associated with the ultraviolet?

He II lines
B I line
Be II lines
carbon III line
Hβ emission
oxygen O I lines

15 True or False, Ultraviolet observations by Mariner 10 of Mercury provided evidence for the presence of H and He in the atmosphere.


Hypotheses[edit | edit source]

  1. Ultraviolet radiation can be an indicator of surface fusion above the photosphere of stars.

See also[edit | edit source]

External links[edit | edit source]

{{Radiation astronomy resources}}