No, the word 'emperor' is a common noun unless used for a specific emperor, for example Emperor Hirohito or Emperor Tiberius.
At the beginning of a sentence and when it forms part of the proper noun.
Example:
It should be capitalized if it is a part of a title, such as Empress Eugenie, otherwise not.
It should only be capitalized if it directly precedes the name of an emperor.
Yes, Emporer Penguin is a name.
Yes.
The word evolution does not need to be capitalized.
No, coral does not need to be capitalized.
No, circa does not need to be capitalized.
No, it doesn't need to be capitalized.
No, kinetic energy doesn't need to be capitalized.
Yes, Empress Josephine is a proper noun. It refers to a specific person, the wife of Napoleon Bonaparte and the first Empress of the French.
No, coral does not need to be capitalized.
The word evolution does not need to be capitalized.
No, it shouldn't be capitalized.
No, it doesn't need to be capitalized.
No, circa does not need to be capitalized.
No, kinetic energy doesn't need to be capitalized.
Occupations are not typically capitalized unless they are used as part of a title before a name (e.g., President Obama). Otherwise, they are usually written in lowercase (e.g., teacher, doctor).
it does not need to be capitilized.
No. Queries do not need to be capitalized.
Yes, Tae Kwon Do should be capitalized as it is a proper noun referring to a specific martial art.
No, the word "region" does not need to be capitalized in a sentence unless it is the first word of the sentence or part of a proper noun (e.g. "Pacific Northwest region").