Plasmas/Plasma objects/Quiz

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This is an image of a gigantic jet above a thunderstorm near the Philippines. Credit: H. T. Su, R. R. Hsu, A. B. Chen, Y. C. Wang, W. S. Hsiao, W. C. Lai, L. C. Lee, M. Sato & H. Fukunishi.

Plasma objects is a lecture and article about astronomical and other types of objects composed primarily of plasmas.

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

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1 True or False, The natural electric field of the Earth has a negative charge at the surface of the Earth and a positive charge at the ionosphere.


2 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

3 True or False, The natural electric field of the Earth is caused in part by the solar wind.


4 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 .

5 True or False, The natural electric field of the Earth starts at its surface and extends inward to the core.


6 Which of the following is associated with an atmosphere?

jet streams

7 True or False, The natural electric field of the Earth includes the electrosphere.


8 Which of the following are associated with electromagnetics?

angular momentum transfer
solar wind
the baryon neutrino
charge neutralization

9 True or False, The natural electric field of the Earth has a gradient of the about 200 volts/meter just above the Earth's surface.


10 True or False, For the photosphere to have a net negative charge and interstellar electrons to be streaming into the solar system, the sign of the voltage at the Sun is positive.


See also[edit]

External links[edit]

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