User:Marshallsumter/Radiation astronomy/Absorptions/Quiz

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

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Quiz
{Which of the following emission/absorption phenomena are associated with radiation astronomy? + helium lines at 501 and 505 nm + the strong C2 (1,2) band + nitrogen emission in plasmas at 566.934 nm from N VIII + helium emission line at 5876 Å + neutral iron line at 526.96 nm + calcium yellow line at 569.4 nm
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{Which of the following is a phenomenon associated with yellow astronomy? - Jupiter + sodium line emission - sunspots on the Sun - an emission with a wavelength of 420 nm - phosphorus - TiO
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{Which chemical phenomenon are associated with the Earth? + quartz is the second most abundant mineral + an atmosphere containing CO2 + green, red, blue, and yellow airglow + the production and escape of hot H+ ions + oxygen emissions + helium ions
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{Complete the text: The detection of absorption by interstellar { hydrogen fluoride|HF (i) } in the { submillimeter (i) } band occurs along the sight line to the submillimeter continuum sources W49N and W51.
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{True or False, The absorption and reradiation of light by dust in the history of galaxy formation and evolution is the submillimeter extragalactic background light (EBL). + TRUE - FALSE
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{The extent of the Hα absorption trough along the major axes of quenched spirals is what? + more truncated than the distribution of the Hα emission line for H I deficient galaxies - contributed to by the new stellar population - less truncated than the distribution of the Hα emission line for H I deficient galaxies - due to the quenching - disks building up from the outside in
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{Complete the text: The solar occultation for { ice (i) } experiment (SOFIE) is an { infrared (i) } radiometer experiment that uses a differential absorption technique in solar occultation ( { sunrise (i) } and sunset).
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{Observations of comets have benefited greatly from what phenomenon of cyan astronomy? - Cherenkov radiation - the electric blue glow of lightning - gas-expansion velocity decreases with increasing heliocentric distance - methane possesses prominent absorption bands in the visible - adaptive optics + the light of the neutral CN-radical
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{Complete the text: Methane possesses prominant { 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 emission/absorption phenomena are associated with green astronomy? + Helium lines at 501 and 505 nm + the strong C2 (1,2) band + nitrogen emission in plasmas at 566.934 nm from N VIII - Helium emission line at 5876 Å + neutral iron line at 526.96 nm + Calcium yellow line at 569.4 nm
 * type="[]"}

{Complete the text: In the case of electric { dipole (i) } radiation, the associated fluctuation in angular { momentum (i) } is due to absorption of and decays stimulated by { microwave (i) } photons (dominated by Cosmic Microwave Background (CMB) photons in the { diffuse (i) } interstellar { mediuma (i) } (ISM).
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{Which of the following emission/absorption phenomena are associated with yellow astronomy? + Nitrogen emission line at 575.5 nm - the strong C2 (1,2) band - nitrogen emission in plasmas at 566.934 nm from N VIII + Helium emission line at 5876 Å - neutral iron line at 526.96 nm + Calcium yellow line at 569.4 nm
 * type="[]"}

{Spin-charge separation has which characteristics? + a chargon + a spinon + taking place inside solids + extremely tight confinement - neutron affinity - X-ray absorption
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{Which of the following are associated with classical Cepheids as a standard candle? - characteristic mottling + young, disk objects + recent star formation - incipient resolution + pulsation phenomenon - easy to recognize + correction for absorption
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{True or False, The standard candle being used in 1977 for spectral region K5-M4 is the CN (cyanide) index from the CN absorption in selected bands. + TRUE - FALSE
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{Complete the text: Match up the type of source with each of the possibilities below: a source - A a source or apparent source detected or created at or near the time of the event or events - B a source or apparent source that transforms or transduces anything originating from a primary source - C a source or apparent source that selects (such as through selective absorption), distills, scatters, or reflects anything from a primary or secondary source - D the point of origin of a ray, beam, or stream of small cross section traveling in a line - E a natural source in the sky especially at night - F a tertiary source { D (i) }. a primary source { B (i) }. an astronomical source { F (i) }. a secondary source { C (i) }. a radiation source { E (i) } an entity from which something comes or is acquired { A (i) }.
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{Supernovae of Type Ia lack hydrogen lines and helium lines in their optical spectra; during the first month after maximum light they do have a strong absorption feature produced by the red doublet (λ6347, λ6371 Å) of singly ionized? { silicon (i) }.
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{Phenomena associated with some brown dwarfs are which of the following? + lithium + a temperature well below the stellar range + methane absorption + the lithium test + X-rays + T dwarfs
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{Mathematical phenomena associated with an exponential decrease are - a positive exponent - a negative absorption coefficient + the number of atoms per cm3 + the initial absorption of a monolayer + the absorption cross section in cm2 - thinness of material
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{Complete the text: The spectral region bounded on the long wavelength side by the atmospheric { ozone (i) } absorption and on the short wavelength side by the photoionization of interstellar { hydrogen (i) } is the ultraviolet.
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{Which of the following is not a characteristic of super soft X-radiation? - electromagnetic radiation - ionizing radiation - usually hidden by interstellar absorption in the galactic disk - readily evident in external galaxies + have energies in the 0.09 to 2.5 keV range
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{Which of the following is not a phenomenon associated with the history of violet astronomy? - photographs of the planet Venus taken in 1927 - two nebulous bright streaks running approximately perpendicular to the terminator on Venus - observations of Venus in 1959 with spectrographs show a wide continuous absorption - the stellar abundance of aluminum - the Galileo spacecraft observed Venus + the helium beta line
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{TeV muons from gamma-ray primaries are rare because? + only produced by higher energy gamma rays + suppressed gamma-ray flux + decreasing flux at the source - GeV gamma rays + absorption + interstellar light
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{Which of the following are associated with solar limb faculae? + calcium emission lines - TiO absorption lines + chromium emission lines + Fe emission lines - a decrease in redness + emission lines of Ti
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{An entity in X-ray astronomy may be a researcher who turns on an X-ray generator to study X-ray emission, ? { absorption|reflection|transmission|fluorescence (i) }
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Hypotheses

 * 1) Yellow wavelengths help identify elements like sulfur by absorption.