Radiation astronomy/Violets/Quiz

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This is a colour-composite of the barred spiral galaxy NGC 5584. Credit: ESO: observations by Susana Randall, Claudio Melo, Swetlana Hubrig; day astronomer Dominique Naef; Henri Boffin (ESO) processed the data and made the colour-composite, and Haennes Heyer (ESO) made the final adjustments.

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

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

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

1 Complete the text:

Match up the violet or violet containing image with the object letter:
Sun - A
Venus - B
Earth - C
Moon - D
Mars - E
Jupiter - F
Ganymede - G
Io - H
Saturn - I
Dione - J
Titan - K
Uranus - L
Ariel - M
Miranda - N
Triton - O
Eta Carinae - P
NGC 5584 - Q
Titan's Halo PIA07774.jpg
Triton's Cryovulcan.jpg
Dione color.jpg
Voyager 2 - Saturn - 3115 7854 2.png
Mars violet sky.jpg
Vg1 1567237.tiff
Eta Carinae.jpg
PIA00072 Venus Cloud Patterns - colorized and filtered.jpg
Iosurface gal.jpg
Uranus rings.png
Moon1 gal big.gif
Clements Mountain NPS.jpg
Blueberrysun friedman 1296.jpg
Ariel color PIA00041.jpg

2 True or False, Violet astronomy is the radiation astronomy over the wavelength band 380-450 nm.


3 Which of the following are radiation astronomy phenomena associated with the rocky-object Io?

surface regions reflecting or emitting violet or purple
an excess brightness at or near the edge
red regions that may be phosphorus
neutron emission
polar coronal holes
meteor emission

4 Yes or No, There are violet or violet mineral containing meteorites.


5 Which of the following is not a phenomenon associated with violet astronomy?

photographs of the planet Venus taken in 1927
the purple haze within a few arcseconds of the central star of the Homunculus
the faintness of carbon stars
the stellar abundance of aluminum
adaptive optics
the helium beta line

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 .
F547M .
F675W .
broad-band filter centered at 404 nm .
F588N .
thallium bromide (TlBr) crystals .
F606W .
18 micrometers FWHM at 490 nm .
wide-gap II-VI semiconductor ZnO doped with Co2+ (Zn1-xCoxO) .

7 Purpurite is a natural mineral pigment composed of what likely source of violet or purple?

8 Complete the text:

Match up the radiation type with the satellite:
meteor - A
cosmic ray - B
neutral atoms - C
neutron - D
proton - E
electron - F
positron - G
neutrino - H
gamma ray - I
X-ray - J
ultraviolet - K
optical - L
visual - M
violet - N
blue - O
cyan - P
green - Q
yellow - R
orange - S
red - T
infrared - U
submillimeter - V
microwave - W
radio - X
radar - Y
superluminal - Z
JUNO - PIA13746.jpg
RAE B.jpg
Chandra-spacecraft labeled-en.jpg
Alpha Magnetic Spectrometer - 02.jpg
GLAST on the payload attach fitting.jpg
IBEX spacecraft.jpg
STEREO spacecraft.gif
Aquarius SAC-D satellite.png
STS-134 International Space Station after undocking.jpg
Micrometeoroid hole.jpg
FUSE prelaunch crop.jpg
Swas 1.jpg
2001 mars odyssey wizja.jpg
Spitzer space telescope pre-launch.jpg
TERRA am1.jpg
Galileo Energetic Particles Detector.jpg
Pioneer 10 on its kickmotor.jpg
Mariner 10.jpg

9 Why is much of the surface of Mars covered with red iron oxide dust when the rocks that compose much of its surface are blue or violet?

Mars has been systematically bombarded with small iron-nickel meteorites or micrometeorites that oxidize in its atmosphere
Mars has been frequently bombarded with hematite containing micrometeorites
asteroid impacts on Mars may have forced iron from near its core into the atmosphere and onto the surface as hematite dust that oxidized
Mars is like Earth in surface hematite composition, but Earth has much more water
precipitation from iron-rich water

10 Complete the text:

Match up the radiation object with the likely source:
Crmo volcanic bomb 20070516123632.jpg
- L
Circinus X-1.jpg
- M
Moon egret.jpg
- N
Neusun1 superk.jpg
- O
Earth in ultraviolet from the Moon (S72-40821).jpg
- P
PIA00072 Venus Cloud Patterns - colorized and filtered.jpg
- Q
Io Color Eclipse Movie - PIA03450.gif
- R
NGC 7048.jpg
- S
HST NGC 5728 -O III- emission-line image.jpg
- T
a Craters of the Moon volcano .
violet image of Venus .
active galactic nuclear region of NGC 5728 .
cosmic-ray bombardment of the Moon's surface .
blue lights from Io .
neutrino profile of the solar octant .
planetary nebula NGC 7048 .
ultraviolet image of the Earth .
a neutron star in a binary system .


Main source: Hypotheses
  1. Violet radiation yields clues through clouds of what's beneath.

See also[edit]

External links[edit]