Absolutely, espcially in an essay or report
Yes, you should always underline the name of something, except the names of people.
No. A film title should be set in title case, for example, The Wizard of Oz. If you are being thorough, then set the name in italics, for example, The Wizard of Oz.
No. The word "movie" is not underlined.
underline the name of a magazine but quote the names of the articles.
If you are writing by hand, then yes you underline it, but if you are typing, you need to italicize it.
No.
you underline it because you cant you a quotation mark to present a book or the title of a movie.
yes or italicize it
you underline the title of the movie
No, you underline it. By the way, movie titles are in italics, and songs are in quotation marks.
No, it is not necessary to underline a scientific name even if it is completely written in capital letters. The proper format for writing a scientific name is to italicize it or underline it to indicate that it is a Latinized binomial name.
No, you do not need to underline the name of a seminar listed on an agenda. Simply bold or italicize it to make it stand out.