Plasmas/Quiz

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The surface of a MEMS device is cleaned with bright, blue oxygen plasma in a plasma etcher to rid it of carbon contaminants. (100mTorr, 50W RF) Credit: Maxfisch.

Plasmas is a lecture about astronomical and other types of plasmas.

You are free to take this quiz based on plasmas 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 and charge ontology templates. 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.

Suggestion: Have the lecture available in a separate window.

To master the information and use only your memory while taking the quiz, try rewriting the information from more familiar points of view, or be creative with association.

Enjoy learning by doing!

Quiz[edit]







  

1

Yes or No, Nitrogen has two emission lines that occur in plasmas at 455.368 and 455.545 nm from N VII.

Yes
No

2

Complete the text:

Plasma

involves the removal of impurities and contaminants from

through the use of an

plasma created from gaseous

.

3

True or False, Gases such as argon and oxygen, as well as mixtures such as air and hydrogen/nitrogen are used in the removal of impurities and contaminants by plasmas.

TRUE
FALSE

4

Complete the text:

A plasma can be created by using

voltages (typically around 1/1000 atmospheric pressure) to

a low pressure gas.

5

True or False, Carbon has three emission lines that occur in electron cyclotron resonance (ECR) heated plasmas: 464.742, 465.025, and 465.147 nm from C III.

TRUE
FALSE

6

Yes or No, The photosphere of the Sun as seen from Earth is at least 15 % by particle numbers plasma?

No
Yes

7

Complete the text:

A coronal cloud is a cloud, or cloud-like, natural astronomical entity, composed of

and usually associated with a

or other astronomical object where the temperature is such that

are emitted.

8

True or False, Argon has an emission line that occurs in an electron cyclotron resonance (ECR) heated plasmas: 473.591 nm from Ar I.

TRUE
FALSE

9

Yes or No, Plasmas are conductive assemblies of charged particles, neutrals and fields that exhibit collective effects.

Yes
No

10

Yes or No, A blue glow in the surrounding air is emitted by cyclotron particulate radiation.

Yes
No


See also[edit]

External links[edit]

{{Radiation astronomy resources}}