Cosmic radiation astronomy/Quiz

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The cosmic-ray telescope collects data on the composition of the cosmic ray particles and their energy ranges. Credit: NASA.Template:Tlx

Cosmic-ray astronomy is a lecture as part of the astronomy course on the principles of radiation astronomy.

You are free to take this quiz based on cosmic-ray 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 Template:Tlx template. This should give you adequate background to get 100 %.

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Quiz

<quiz>

{What negatively charged particles may be used as tracers of cosmic magnetic fields? |type="{}"} { electrons (i) }

{True or False, Violent activity and supernovae generate cosmic-ray superthermal particles. |type="()"} - TRUE + FALSE

{A cosmic ray may originate from what astronomical source? |type="()"} - Jupiter - the solar wind - the diffuse X-ray background - Mount Redoubt in Alaska - the asteroid belt + an active galactic nucleus

{True or False, A small amount of aluminum-26 is produced by collisions of magnesium atoms with cosmic-ray protons. |type="()"} - TRUE + FALSE

{Ionization within the Earth's atmosphere from cosmic rays has what property? |type="()"} - it's subject to solar eclipses - it increases underwater - cosmic rays do not penetrate the atmosphere - is higher at the base of the Eiffel tower rather than the top - is obscured by hot-air balloons + the ionization rate rises at rising elevation

{True or False, The feature that makes deep inelastic lepton scattering and e+e- annihilation tractable is that these processes proceed via the electromagnetic and strong interactions. |type="()"} - TRUE + FALSE

{Which types of radiation astronomy directly observe the rocky-object surface of Venus? |type="[]"} - 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

{True or False, Due to the limited shielding provided by its relatively weak magnetic dipole moment, the surface of Mercury is everywhere subject to bombardment by cosmic rays. |type="()"} + TRUE - FALSE

{Complete the text: |type="{}"} Match up the item letter with each of the possibilities below: Meteors - A Cosmic rays - B Neutrons - C Protons - D Electrons - E Positrons - F Gamma rays - G Superluminals - H X-ray jets { C (i) } the index of refraction is often greater than 1 just below a resonance frequency { H (i) }. iron, nickel, cobalt, and traces of iridium { A (i) }. Sagittarius X-1 { G (i) }. escape from a typical hard low-mass X-ray binary { F (i) }. collisions with argon atoms { B (i) }. X-rays are emitted as they slow down { E (i) }. Henry Moseley using X-ray spectra { D (i) }.

{The relative abundances of solar cosmic rays reflect those of the solar |type="{}"} { photosphere (i) }

{Complete the text: |type="{}"} The { delta-ray|delta ray (i) } tracks in emulsion chambers have been used for { direct (i) } measurements of { cosmic-ray|cosmic ray (i) } nuclei above { 1 TeV/nucleon (i) } in a series of balloon-borne experiments.

{Complete the text: |type="{}"} 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) }.

{True or False, Some cosmic-ray observatories also look for high energy gamma rays and X-rays. |type="()"} + TRUE - FALSE

{Complete the text: |type="{}"} Match up the type of cosmic-ray detector with each of the possibilities below: visible tracks - A diffusion cloud chamber - B bubbles - C a grid of uninsulated electric wires - D similar to the Haverah Park experiment - E fluorescence detectors - F spark chamber { D (i) }. continuously sensitized to radiation { B (i) }. Pierre Auger Observatory { F (i) }. bubble chamber { C (i) }. Cherenkov detector { E (i) } expansion cloud chamber { A (i) }.

{True or False, Solitary electrons constitute much of the remaining 1 % of cosmic rays. |type="()"} + TRUE - FALSE

{Complete the text: |type="{}"} Cosmic rays with energies over the { threshold (i) } energy of 5 x 1019 { eV (i) } interact with { cosmic microwave background (i) } photons to produce { pions (i) } via the Δ resonance.

{Yes or No, The phenomenology of cosmic ray cascades reflects in an essential way processes governed by the weak force. |type="()"} - Yes + No

{Complete the text: |type="{}"} Bombardment by protostellar { cosmic rays (i) } may make the rock { precursors (i) } of calcium-aluminum-rich inclusions { CAIs (i) } and chondrules radioactive, producing { radionuclides (i) } found in meteorites that are difficult to obtain with other mechanisms.

{Complete the text: |type="{}"} Match up the item letter with each of the detectors or satellites below: Bonner Ball Neutron Detector - A Multi Mirror Telescope - B MAGIC telescope - C Explorer 11 - D HEAO 3 - E Helios - F Pioneer 10 - G Voyager 1 - H

{ C (i) }

{ H (i) }.

{ A (i) }.

{ G (i) }.

{ F (i) }.

{ B (i) }.

{ E (i) }.

{ D (i) }.

{Which of the following are determined by the CRS aboard Voyager 1? |type="[]"} + origin + acceleration process - neutrinos + life history + dynamic contribution + nucleosynthesis + behavior in the interplanetary medium - X-rays - ultraviolets - visuals - trapped particle environment + a steady rise in May 2012 of collisions with high energy particles above 70 MeV + a dramatic drop in collisions in late August

</quiz>

Hypotheses

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  1. Cosmic rays leave a trail that can be detected.

See also

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Template:TlxTemplate:Principles of radiation astronomyTemplate:Sisterlinks

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