User:Marshallsumter/Radiation astronomy/Atomics/Quiz

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Methane is found in the Martian atmosphere. Credit: NASA.{{free media}}

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

You are free to take this quiz based on [Radiation astronomy/Atomics|Atomic radiation 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 {{principles of radiation astronomy}} template. This should give you adequate background to get 100 %.

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Enjoy learning by doing!

Quiz

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1 Complete the text:

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

the index of refraction is often greater than 1 just below a resonance frequency

.
iron, nickel, cobalt, and traces of iridium

.
Sagittarius X-1

.
escape from a typical hard low-mass X-ray binary

.
collisions with argon atoms

.
X-rays are emitted as they slow down

.
Henry Moseley using X-ray spectra

.

2 True or False, The disparity between the atomic number of an atom and its atomic mass is explained by the existence of the neutrino.

TRUE
FALSE

3 An argon-37 atom is converted by a neutrino by the charged current interaction from what atom?

4 Which of the following may be characteristic of magnetohydrodynamics?

driven by current gradients
neutral atoms
closed tube loops
twisted flux
open field lines
synchrotron radiation

5 True or False, The fundamental unit was over 1000 times smaller than an atom, suggesting the subatomic particles called delta rays.

TRUE
FALSE

6 The elastic collisions between the projectile ion and atoms in the detector involving the interaction of the ion with the nuclei in the detector material?

7 True or False, The density distributions of a solid or unit of condensed matter involving more than atoms or molecules is not discrete like a spectral density but continuous.

TRUE
FALSE

8 Which of the following are characteristic of positronium?

an exotic atom
a nucleus of neutronium
a decay product of a neutron
a weak interaction
an eletromagnetic interaction
a center of mass

9 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

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10 True or False, A small amount of aluminum-26 is produced by collisions of magnesium atoms with cosmic-ray protons.

TRUE
FALSE

11 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

12 Complete the text:

The

series is the series of transitions and resulting ultraviolet emission lines of the

atoms as an electron goes from a high-energy level to an n =

level.

13 Which of the following are associated with muon astronomy?

high-energy cosmic rays
secondary and tertiary cosmic rays
nuclear interactions between neutrons and quartz
nuclear interactions between muons and calcite
production rates of a few atoms per gram of rock per year
build-up of cosmogenic nuclides through time

14 When plasma is present, what characteristic is readily observed?

the magnetic north pole
gravity
neutral neodymium atoms
electrons
temperatures below 104 K
solar positron events


Hypotheses

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Main article: Hypotheses
  1. More technical questions concerning neutrons and neutron detection safety may be good.

See also

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{{Radiation astronomy resources}}

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