Astrophysics/Quiz

The ALMA correlator is one of the most powerful supercomputers in the world. Credit: ALMA (ESO/NAOJ/NRAO), S. Argandoña.

Astrophysics is a lecture and an article about the application of laboratory physics to astronomical phenomena. It is part of the astronomy course on the principles of radiation astronomy.

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

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Quiz

<quiz>

{True or False, A calculation of energy is not possible unless a mass is involved. |type="()"} + TRUE - FALSE

{Which of the following is not an electron volt? |type="()"} + the angular momentum of the planet Mercury around the Sun - a unit of energy - a quantity that denotes the ability to do work - 1.2 PeV - a unit dimensioned in mass, distance, and time - a unit not based on the Coulomb

{Yes or No, The force of gravity is a major portion of the strong nuclear force. |type="()"} - Yes + No

{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.

{True or False, The average value of the radius of the Earth's orbit around the Sun is a displacement. |type="()"} + TRUE - FALSE

{The science of physical and logical laws is called |type="{}"} { nomology (i) }

{True or False, The temperature of the cores of stars may be determined by the balance between the gravitational attraction and the gas pressure. |type="()"} + TRUE - FALSE

{The use of the principle of line of sight allows what phenomenon to be determined? |type="()"} + the Moon is closer to the Earth than the Sun - the planet Mercury is nearer to the Earth than Venus - any cumulus cloud overhead follows the Sun across the sky - the plane of the Earth's orbit around the Sun is in the plane of the galaxy - the surface of the photosphere of the Sun is hotter than the surface of Mars - lightning always precedes rain

{True or False, A unit vector is a direction with a magnitude of one. |type="()"} + TRUE - FALSE

{Which of the following are involved in the weak force? |type="[]"} - a core which emits neutrinos + Fermi's β-decay theory - ²⁶Al - undetectable with balloon-borne detectors + Gamow-Teller interactions - steady enough emission to be used as a standard for X-ray emission - observed with delta-rays in 1731 + M. Fierz

{True or False, Any space in the real universe is completely empty of microwaves. |type="()"} - TRUE + FALSE

{The strong force is involved in which of the following phenomena? |type="[]"} + s-waves + the sum of the spins - neutrinos + Pauli's exclusion principle + deuterium - radio waves

{True or False, When the magnetic poles of the Sun reverse during the solar cycle, there is a short time in which the polar diameter is greater than the equatorial diameter. |type="()"} + TRUE - FALSE

{Which of the following are associated with electromagnetics? |type="[]"} + angular momentum transfer + solar wind + protons + electrons - the baryon neutrino + charge neutralization

{True or False, The generalized weak force theory combines the Fermi and Gamow-Teller conditions into a unified theory. |type="()"} + TRUE - FALSE

{Which of the following are associated with the big bang neutrinos? |type="[]"} - a launch location + relic neutrinos + of order of the photon density + the thermal energy at which neutrinos decouple + neutrinos dynamically dominate baryons - a contracting universe

{True or False, The force of gravity is the first astronomical source of the strong nuclear force. |type="()"} - TRUE + FALSE

{The generalization to self-gravitating continua is outlined focused on the classification problem of singularities and metamorphoses arising in the |type="{}"} { density field (i) }.

{If energy is the impetus behind all motion and activity, which of the following are associated with power? |type="[]"} - a launch location + a rate of change of the impetus with time - photon density - an acceleration of the impetus - neutrinos dynamically dominating baryons + a rate of change of mass

{A first astronomical source has? |type="[]"} + a temporal distribution with at least one datum - a spectral distribution - a spatial distribution + a position or location - a geognosy + scientific or observational investigations

{

For standard basis, or unit, vectors (i, j, k) and vector components of a (a_x, a_y, a_z), what are the right ascension, declination, and value of a?

|type="[]"} - if the x-axis is the longitude of the Greenwich meridian, and a_x equals a_y, then RA equals 6^h + if the x-axis is the longitude of the Greenwich meridian, and a_x equals a_y, then RA equals 3^h + the value of a is given by $a=\sqrt{a_x^2+a_y^2+a_z^2}$ - if a_x equals a_y equals a_z, then the declination is -45° + if a_x equals a_y equals a_z, then the declination is +45° Template:Clear

{Which of the following are characteristic of the first true astrophysical gamma-ray source? |type="[]"} + a strong 2.223 MeV emission line + a solar flare + the formation of deuterium - the electron neutrino + OSO-3 + neutrons

</quiz>

Hypotheses

1. More questions aimed at astrophysics theory and laboratory efforts may be better.

See also

• Astronomy quiz
• Radiation astrochemistry/Quiz
• Radiation astrogeography/Quiz
• Radiation astrohistory/Quiz
• Radiation astronomy/Quiz
• Theoretical radiation astronomy/Quiz

External links

• International Astronomical Union
• NASA/IPAC Extragalactic Database - NED
• NASA's National Space Science Data Center
• The SAO/NASA Astrophysics Data System
• SDSS Quick Look tool: SkyServer
• SIMBAD Astronomical Database
• SIMBAD Web interface, Harvard alternate
• Spacecraft Query at NASA.
• Universal coordinate converter