Stars/Infrareds/Quiz

Infrared stars is a lecture from the department of radiation astronomy possibly for the course on the principles of radiation astronomy and is already in the star courses.

You are free to take this quiz based on infrared stars 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 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.

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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
{The Sun may be a first astronomical source of? + blue rays - X-rays + cyan rays + infrared rays + protons + neutrinos
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{Yes or No, HR 4731, α2 Cru is an infrared source in the constellation Crux. + Yes - No
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{Imaging brown dwarfs involve which of the following: + far-infrared (submillimeter) observations at 350 microns - neutrino detection + heating of the nearby gas and dust + near-infrared covering 1.3 and 2.2 microns + infrared covering 4.5 and 8.0 microns
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{Which of the following are radiation astronomy phenomena usually associated with lithium emission? + a green emission line - nucleosynthesis + 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
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{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! + TRUE - FALSE
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{Complete the text: Astronomers place the submillimetre waveband between the { far-infrared (i) } and { microwave (i) } wavebands, typically taken to be between a few hundred micrometres and a millimetre.
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{True or False, The Earth's atmosphere does not transmit infrared radiation between 6 and 7 microns in wavelength because of water vapor. + TRUE - FALSE
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{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 { L (i) }. F547M { Q (i) }. 511 keV gamma-ray peak { F (i) }. F675W { T (i) }. broad-band filter centered at 404 nm { N (i) }. a cloud chamber { B (i) }. ring-imaging Cherenkov { X (i) }. coherers { W (i) }. effective area is larger by 104 { H (i) }. F588N { R (i) }. pyroelectrics { U (i) }. a blemish about 8,000 km long { A (i) }. a metal-mesh achromatic half-wave plate { V (i) }. coated with lithium fluoride over aluminum { K (i) }. thallium bromide (TlBr) crystals { O (i) }. F606W { S (i) }. aluminum nitride { J (i) }. heavy water { G (i) }. 18 micrometers FWHM at 490 nm { P (i) }. wide-gap II-VI semiconductor ZnO doped with Co2+ (Zn1-xCoxO) { M (i) }. a recoiling nucleus { C (i) } high-purity germanium { I (i) }. magnetic deflection to separate out incoming ions { E (i) }. 2.2-kilogauss magnet used to sweep out electrons { D (i) }.
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{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 { F (i) } interstellar-comet connection { B (i) }. a macroscopic superstring { A (i) }. force of life { H (i) }. rings of Saturn { C (i) }. volcanic activity throughout Vesta { G (i) }. a silicon composite bolometer fed by a Winston cone { E (i) }. present-day fluctuations an order of magnitude larger { D (i) }.
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{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 { M (i) }. { X (i) }. { J (i) }. { Z (i) }. { N (i) }. { I (i) }. { Y (i) }. { H (i) }. { L (i) }. { C (i) }. { P (i) }. { E (i) }. { W (i) }. { O (i) }. { A (i) }. { Q (i) }. { G (i) }. { K (i) }. { V (i) }. { D (i) }. { U (i) }. { R (i) }. { F (i) } { S (i) }. { B (i) }. { T (i) }.
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{Complete the text: Methane possesses prominent { absorption bands|absorption (i) } in the visible and near-infrared (IR) making { Uranus (i) } aquamarine or { cyan (i) } in color.
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{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
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{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. + TRUE - FALSE
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{The Spitzer Space Telescope has the following phenomena usually associated with it? + cryogenically-cooled + 85 cm diameter + f/12 - lightweight boron + 3 - 180 µm wavelength range - the Fraunhofer E line
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{Radiation phenomena associated with trigonometric parallax are - gamma-ray trigonometric parallax distances < 0.4 kpc - X-ray trigonometric parallax distances good to 2 pc - ultraviolet trigonometric parallax is good to ± 7 pc + visual trigonometric parallax distances good to about 3 kpc + infrared trigonometric parallax with an accuracy of 120 µas + radio trigonometric parallax distances good at least to 1.86 kpc
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Hypotheses

 * 1) Questions about infrared stars can touch on any and all wavelengths.