Radiation astronomy/Infrareds/Quiz

From Wikiversity
Jump to navigation Jump to search
Combined observations from NASA's Spitzer Space Telescope and the newly completed Atacama Large Millimeter/submillimeter Array (ALMA) in Chile have revealed the throes of stellar birth, as never before, in the well-studied object known as HH 46/47. Credit: NASA/JPL-Caltech/ALMA.

Infrared astronomy is a lecture as part of the department of astronomy course on the principles of radiation astronomy.

You are free to take this quiz based on infrared 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 The Sun may be a first astronomical source of?

blue rays
cyan rays
infrared rays

2 Yes or No, HR 4731, α2 Cru is an infrared source in the constellation Crux.


3 Which of the following are radiation astronomy phenomena usually associated with lithium emission?

a green emission line
an orange line at 610.3 nm
the Spite plateau
lithium-drifted silicon detectors
the Fraunhofer E line
asymptotic supergiant branch
an infrared line at 812.6 nm

4 True or False, In 1926 there were no national observatories (except the Naval Observatory), very little chance for guest observing elsewhere, no radio astronomy, no X-ray astronomy, no satellite astronomy, and very little infrared or even red astronomy!


5 Which types of radiation astronomy directly observe the rocky-object surface of Venus?

meteor astronomy
cosmic-ray astronomy
neutron astronomy
proton astronomy
beta-ray astronomy
neutrino astronomy
gamma-ray astronomy
X-ray astronomy
ultraviolet astronomy
visual astronomy
infrared astronomy
submillimeter astronomy
radio astronomy
radar astronomy
microwave astronomy
superluminal astronomy

6 True or False, The rocky surface of the planet Venus can be detected when Venus is observed using infrared astronomy.


7 Complete the text:

Astronomers place the submillimetre waveband between the


wavebands, typically taken to be between a few hundred micrometres and a millimetre.

8 True or False, The Earth's atmosphere does not transmit infrared radiation between 6 and 7 microns in wavelength because of water vapor.


9 Complete the text:

Match up the radiation letter with each of the detector possibilities below:
Meteors - A
Cosmic rays - B
Neutrons - C
Protons - D
Electrons - E
Positrons - F
Neutrinos - G
Muons - H
Gamma rays - I
X-rays - J
Ultraviolet rays - K
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
Infrared rays - U
Submillimeter rays - V
Radio rays - W
Superluminal rays - X
multialkali (Na-K-Sb-Cs) photocathode materials


511 keV gamma-ray peak


broad-band filter centered at 404 nm

a cloud chamber

ring-imaging Cherenkov


effective area is larger by 104



a blemish about 8,000 km long

a metal-mesh achromatic half-wave plate

coated with lithium fluoride over aluminum

thallium bromide (TlBr) crystals


aluminum nitride

heavy water

18 micrometers FWHM at 490 nm

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

a recoiling nucleus

high-purity germanium

magnetic deflection to separate out incoming ions

2.2-kilogauss magnet used to sweep out electrons


10 Complete the text:

Match up the item letter with each of the possibilities below:
superluminals - A
radios - B
radars - C
microwaves - D
submillimeters - E
infrareds - F
reds - G
oranges - H
deuterium enrichment of cometary water

interstellar-comet connection

a macroscopic superstring

force of life

rings of Saturn

volcanic activity throughout Vesta

a silicon composite bolometer fed by a Winston cone

present-day fluctuations an order of magnitude larger


11 True or False, Infrared astronomy began in the 1730s, a few decades after the discovery of infrared light by William Herschel


12 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


13 True or False, The infrared spectra of olivine and enstatite are essentially unchanged after proton bombardment.


14 Cheomseongdae was involved in which of the following astronomies?

cosmic-ray astronomy
infrared astronomy
neutrino astronomy
visual astronomy
ultraviolet astronomy
radio astronomy

15 The cosmic infrared background (CIB) causes a significant attenuation for very high energy protons through inverse Compton scattering, photopion and electron-positron pair production.


16 Complete the text:

Methane possesses prominent

in the visible and near-infrared (IR) making

aquamarine or

in color.

17 Infrared astronomy has really helped to detect what type of astronomical object?

a stellar class G dwarf
the hydrogen Balmer alpha line
the photosphere of the Sun
extrasolar planets
the CMB

18 Which of the following may be true regarding the interacting galaxies of UGC 9618?

the pair of galaxies appear to be interacting rather than a mere galaxy double
a lack of luminous sources at any wavelength in the interaction volume
asymmetry is approximately centered on the interaction volume
a common origin originally between them
the large X-ray output surrounding primarily the more central portion of the edge-on galaxy suggests a very high temperature galactic coronal cloud
the infrared portion of the composite image with ultraviolet strongly suggests that the edge-on galaxy is much cooler in general than the face-on galaxy
orange and yellow astronomy reveal that the edge-on galaxy may be composed of older or cooler stars
VV340A appears to be more than 33 % involved in the interaction

19 Which of the following are phenomena usually associated with fluorine emission?

fluorine emission lines in the green are relatively weak
fluorine lines in the near infrared are usually much stronger than the green lines
F I has lines in the green
F II has lines in the green
F III has at least one line in the green
the Fraunhofer E line

20 True or False, The European Space Agency's Herschel Space Observatory has aboard the Photodetector Array Camera and Spectrometer (PACS) which operates in three bands centred on 70, 100, and 160 μm, respectively.


21 The Spitzer Space Telescope has the following phenomena usually associated with it?

85 cm diameter
lightweight boron
3 - 180 µm wavelength range
the Fraunhofer E line

Hypotheses[edit | edit source]

  1. Questions about infrared astronomy can touch on any and all wavelengths.

See also[edit | edit source]

External links[edit | edit source]

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