What means ice age?
An ice age is a period of colder global temperatures that features recurring glacial expansion across the Earth’s surface. Capable of lasting hundreds of millions of years, these periods are interspersed with regular warmer interglacial intervals in which at least one major ice sheet is present.
Is Medieval a proper noun?
The word medieval should never be capitalised unless it begins a sentence or forms part of a title. The term the Middle Ages should always be capitalised, except for the the. Occasionally you will find that older writers capitalise medieval. You will also occasionally see the middle ages in lower case.
Is historians a proper noun?
The word “historian” is a common noun since descriptive titles aren’t capitalized. “Middle Ages”, however, is a proper noun since names for cultural and historical events are capitalized.
Do you capitalize time periods?
Specific periods, eras, historical events, etc.: these should all be capitalized as proper nouns. Why? Since there are many periods, eras, wars, etc., the capital will differentiate the specific from the common.
Do you capitalize grades?
When the word grade is followed by a numeral, always capitalize grade and use a numeral for the grade number. When writing a grade in its ordinal form, use words for Grades 1–9 and numerals for Grades 10, 11, and 12. However, if an ordinal number 10 or above starts a sentence, then use words.