User:Marshallsumter/Radiation astronomy1/Plasmas/Quiz

Plasma radiation astronomy is a lecture studying astronomical objects consisting of plasma totally or in some portion.

You are free to take this quiz based on plasma-object 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. This should give you adequate background to get 100 %.

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Quiz
{Complete the text: A plasma can be created by using { high frequency|high-frequency (i) } voltages (typically around 1/1000 atmospheric pressure) to { ionise|ionize (i) } a low pressure gas.
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{Yes or No, Nitrogen has two emission lines that occur in plasmas at 455.368 and 455.545 nm from N VII. + Yes - No
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{Complete the text: A coronal cloud is a cloud, or cloud-like, natural astronomical entity, composed of { plasmas (i) } and usually associated with a { star (i) } or other astronomical object where the temperature is such that { X-rays (i) } are emitted.
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{True or False, Because of the huge spatiotemporal scales of plasma objects in space, the basic accepted views about the theory of plasma stability, which is now better suited for laboratory applications, are already in need of revision. - False + True
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{The population of coronal loops can be directly linked with the? { solar cycle (i) }
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{Which of the following is a prominent feature associated with solar clouds? + coronal mass ejections - rotation + magnetic clouds + coronal clouds + plasma + magnetic field lines
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{Yes or No, In physics and chemistry, plasma is a state of matter similar to gas in which a certain portion of the particles are ionized. - No + Yes
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{About one third of ejecta observed by satellites at Earth is composed of what? { magnetic clouds (i) }
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{Yes or No, Plasma is the fourth state of matter, consisting of electrons, ions and neutral atoms, usually at temperatures above 104 degrees Kelvin. - No + Yes
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{When ionization cones are present, what green characteristics are usually readily observed? + O III green emission line + green continua + biconical structure + a common cone axis and apex + ionized gas - neon clouds
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{Yes or No, Blue jets differ from sprites in that they project from the top of the cumulonimbus above a thunderstorm to the lowest levels of the ionosphere. - No + Yes
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{Complete the text: Blue jets differ from sprites in that they project from the { top (i) } of the cumulonimbus above a { thunderstorm (i) }, typically in a narrow cone, to the lowest levels of the { ionosphere (i) }.
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{Yes or No, Red sprites tend to be associated with significant lightning strikes. - No + Yes
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{Which of the following is associated with aeronomy? - botany + chemical composition - technology + physical properties - agriculture + ionization - biochemistry - oceanography + radiation from space
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{Which of the following are associated with X-radiation? + spans three decades in wavelength + spans three decades in frequency + spans three decades in energy + emitted by 26Al + coronal clouds + 60 keV electromagnetic radiation + 90 eV electromagnetic radiation - visually dark source
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{Yes or No, The Chamaeleon I cloud is a coronal cloud. + Yes - No
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{Which of the following are X-radiation astronomy phenomena associated with the Sun? - a core which emits neutrinos - a solar wind which emanates out the polar coronal holes - gravity - the barycenter for the solar system - polar coronal holes + coronal clouds - its position + temperatures at or above 1 MK
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{Complete the text: The photosphere of the Sun has an effective temperature of { 5570 K|5,570 K (i) } yet its corona has an average temperature of { 1-2 MK|1-2 x 106 K (i) }. The high temperature of the corona shows that it is heated by something other than direct { direct heat conduction (i) } from the photosphere.
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