Which of these are plagiarism and why? Which ones are not?

1. Last summer, my family and I traveled to Chicago, which was quite different from the rural area I grew up in. We saw the dinosaur Sue at the Field Museum, and ate pizza at Gino's East.



2. Americans want to create a more perfect union; they also want to establish justice, ensure domestic tranquility, provide for the common defense, promote the general welfare, and secure the blessings of liberty for everybody.



3. I find it ridiculous that 57% of high school students think their teachers assign too much homework.



4. Martin Luther King was certain that nobody would want to be contented with a surfacy type of social analysis that concerns itself only with effects and doesn't deal with root causes.



5. Martin Luther King wrote that the city of Birmingham's "white power structure" left African-Americans there "no alternative" but to demonstrate ("Letter from the Birmingham Jail" para. 5).



6. In "Letter from the Birmingham Jail," King writes to fellow clergy saying that although they "deplore the demonstrations taking place in Birmingham, your statement fails to express a similar concern for the conditions that brought about the demonstrations."



7. My friend Kara told me that she loves living so close to the ocean.



8. Americans are guaranteed the right to freely gather for peaceful meetings.Which of these are plagiarism and why? Which ones are not?
Assuming that the uncited texts are original to the writer, none of them are plagiarism, but a few could be better cited.



1. Personal account. OK.

2. To Americans at least, this probably comes under common knowledge, since it closely follows the Preamble to the United States Constitution. It'd be better to say so, though.

3. Personal opinion. OK.

4. Source is credited: OK. But saying where and when King stated these views would carry more weight.

5. Source is well credited. OK.

6. Source is credited. OK.

7. Personal statement. OK.

8. Common knowledge. OK.

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