Plasmas/Quiz

< Plasmas
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 and article about astronomical and other types of plasmas.

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

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Quiz

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1. True or False, Nitrogen has two emission lines that occur in plasmas at 455.368 and 455.545 nm from N VII.

TRUE
FALSE

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 (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. 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

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See also

External links

This is a research project at http://en.wikiversity.org

Development status: this resource is experimental in nature.
Educational level: this is a research resource.
Resource type: this resource is a quiz.
Subject classification: this is an astronomy resource.
Subject classification: this is a physics resource .
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