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  2. The last of the non-avian dinosaurs died 66 million years ago in the course of the Cretaceous–Paleogene extinction event, whereas the earliest members of the genus Homo (humans) evolved between 2.3 and 2.4 million years ago. This places a 63-million-year expanse of time between the last non-avian dinosaurs and the earliest humans.

  3. Science - Wikipedia

    en.wikipedia.org/wiki/Science

    Science is a systematic discipline that builds and organises knowledge in the form of testable hypotheses and predictions about the universe. [1] [2] Modern science is typically divided into two or three major branches: [3] the natural sciences (e.g., physics, chemistry, and biology), which study the physical world; and the social sciences (e.g., economics, psychology, and sociology), which ...

  4. Biology - Wikipedia

    en.wikipedia.org/wiki/Biology

    Biology is the scientific study of life. [1] [2] [3] It is a natural science with a broad scope but has several unifying themes that tie it together as a single, coherent field.

  5. Scientific terminology - Wikipedia

    en.wikipedia.org/wiki/Scientific_terminology

    Scientific terminology is the part of the language that is used by scientists in the context of their professional activities. While studying nature, scientists often encounter or create new material or immaterial objects and concepts and are compelled to name them.

  6. Dolch word list - Wikipedia

    en.wikipedia.org/wiki/Dolch_word_list

    The Dolch word list is a list of frequently used English words (also known as sight words), compiled by Edward William Dolch, a major proponent of the "whole-word" method of beginning reading instruction. The list was first published in a journal article in 1936 [1] and then published in his book Problems in Reading in 1948. [2]

  7. Scientific theory - Wikipedia

    en.wikipedia.org/wiki/Scientific_theory

    A good theory should be productive; it should raise new questions and presume those questions can be answered without giving up its problem-solving strategies." Auxiliary hypotheses that are independently testable: "An auxiliary hypothesis ought to be testable independently of the particular problem it is introduced to solve, independently of ...

  8. Draw-a-Scientist Test - Wikipedia

    en.wikipedia.org/wiki/Draw-a-Scientist_Test

    The Draw-A-Scientist Test (DAST) is an open-ended projective test designed to investigate children's perceptions of the scientist. Originally developed by David Wade Chambers in 1983, the main purpose was to learn at what age the well known stereotypic image of the scientist first appeared.

  9. Fact - Wikipedia

    en.wikipedia.org/wiki/Fact

    The word fact derives from the Latin factum. It was first used in English with the same meaning: "a thing done or performed" – a meaning now obsolete outside the law. [3] The common usage of "something that has really occurred or is the case" dates from the mid-16th century. [3]