The Full Wiki

Cosmic ray: Quiz


Did you know ...

More interesting facts on Cosmic ray

Include this on your site/blog:
Question 1: The ratio of hydrogen to helium nuclei (28% helium by mass) is about the same as the primordial ________ ratio of these elements (24% by mass He) in the universe.
Noble gasAbundance of the chemical elementsMetalPeriodic table

Question 2: When cosmic ray particles enter the Earth's atmosphere they collide with ________, mainly oxygen and nitrogen, to produce a cascade of lighter particles, a so-called air shower.

Question 3: His classic paper, jointly with ________, published in 1937 described how primary cosmic rays from space interact with the upper atmosphere to produce particles observed at the ground level.
Walter HeitlerArnold SommerfeldWerner HeisenbergMax Born

Question 4: Also the Earth's magnetic field deflects some of the cosmic rays, giving rise to the observation that the intensity of cosmic radiation is dependent on ________, longitude, and azimuth angle.
LatitudeEquatorAntarctic CirclePrime Meridian

Question 5: Millikan believed that cosmic rays were high-energy photons with some secondary electrons produced by ________ of gamma rays.
PositronQuantum electrodynamicsElectromagnetic radiationCompton scattering

Question 6: These collisions, in a process known as a shower, result in the production of many pions and ________, unstable mesons which quickly decay into muons.
KaonQuarkElectronTop quark

Question 7: Typical particles produced in such collisions are charged ________ (e.g.

Question 8: The ________ (flow rate) of cosmic rays incident on the Earth’s upper atmosphere is modulated (varied) by two processes; the sun’s solar wind and the Earth's magnetic field.
Gauss's lawMaxwell's equationsFluxEnergy

Question 9: Muons are ________, and may easily be detected by many types of particle detectors such as bubble chambers or scintillation detectors.
X-rayRadiation therapyIonizing radiationNuclear fission

Question 10: The ________ is expanding magnetized plasma generated by the sun, which has the effect of decelerating the incoming particles, as well as excluding some of the particles with energies below about 1 GeV.
Solar windSolar flareCoronal mass ejectionHeliosphere


Got something to say? Make a comment.
Your name
Your email address