Plasmas/Plasma objects/Astronomy/Quiz

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This is a color composite image of NGC 7662. Credit: Judy Schmidt.

Plasma-object 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 astronomy resources template. This should give you adequate background to get 100 %.

As a "learning by doing" resource, this quiz helps you to assess your knowledge and understanding of the information, and it is a quiz you may take over and over as a learning resource to improve your knowledge, understanding, test-taking skills, and your score.

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Enjoy learning by doing!

Quiz[edit | edit source]


1 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.


2 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.


3 Which of the following are green radiation astronomy phenomena associated with the Sun?

the color of the upper rim as seen from Earth
an excess brightness at or near the edge of the Sun
the iron XIV green line
neutron emission
polar coronal holes
meteor emission
changes in the line-blanketing

4 Yes or No, Plasma is the fourth state of matter, consisting of electrons, ions and neutral atoms, usually at temperatures above 104 degrees Kelvin.


5 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

6 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.


7 Complete the text:

Blue jets differ from sprites in that they project from the

of the cumulonimbus above a

, typically in a narrow cone, to the lowest levels of the


8 Yes or No, Red sprites tend to be associated with significant lightning strikes.


9 Which of the following is associated with an atmosphere?

jet streams

10 Which of the following is associated with aeronomy?

chemical composition
physical properties
radiation from space

See also[edit | edit source]

External links[edit | edit source]