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BBC Bitesize, [1] also abbreviated to Bitesize, is the BBC's free online study support resource for school-age people in the United Kingdom. It is designed to aid people in both schoolwork and, for older people, exams .
Scipione Amati's History of the Kingdom of Woxu (1615), an example of a secondary source. In scholarship, a secondary source [1] [2] is a document or recording that relates or discusses information originally presented elsewhere. A secondary source contrasts with a primary, or original, source of the information being discussed. A primary ...
Secondary sources are accounts at least one step removed from an event or body of primary-source material and may include an interpretation, analysis, or synthetic claims about the subject. [2] Secondary sources may draw on primary sources and other secondary sources to create a general overview; or to make analytic or synthetic claims. [3] [4]
A secondary source usually provides analysis, commentary, evaluation, context, and interpretation. It is this act of going beyond simple description, and telling us the meaning behind the simple facts, that makes them valuable to Wikipedia. Reputable secondary sources are usually based on more than one primary source.
In contrast, controllable renewable energy sources include dammed hydroelectricity, bioenergy, or geothermal power. Percentages of various types of sources in the top renewable energy-producing countries across each geographical region in 2023. Renewable energy systems have rapidly become more efficient and cheaper over the past 30 years. [3]
Many sources contain a combination of primary/secondary or secondary/tertiary material, sometimes all three. A source that is secondary in one context may be primary in another (e.g. a history book is a secondary source for the facts it reports, but a primary source for what the author wrote about an event).
Secondary sources are at least one step removed from an event. They rely for their material on primary sources, often making analytic, synthetic, interpretive, explanatory, or evaluative claims. [4] [5] [6] Secondary sources include books, newspaper reports, reviews of films etc. and many academic papers, although this always depends on the ...
For science material, the usual secondary source is a literature review. We like to have both, because secondary sources indicate acceptance by other experts and are more understandable by more readers, while primary ones provide details and are especially useful to university students and experts using Wikipedia.