Like all science, biology is a process of inquiry.

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Presentation transcript:

KEY CONCEPT Science is a way of thinking, questioning, and gathering evidence.

Like all science, biology is a process of inquiry. Scientists make careful and systematic observations. Scientists record observations as data. Scientists form a hypothesis as a possible answer to a question. (can’t be proved only tested!) Scientists test their hypotheses and analyze their data. Where in the cycle would we retest a hypothesis?

Biologists use experiments to test hypotheses. Observational studies allow scientists to describe a phenomenon. - a fact or situation that is observed to exist or happen, especially one whose cause or explanation is in question.

Experimentals allow scientists to determine what causes a phenomenon.

Experimental studies allow scientists to determine what causes a phenomenon. Independent variables are manipulated. Dependent variables are observed and measured. Constants are conditions that are kept the same.

A theory explains a wide range of observations. Theories explain a wide range of observations and experimental results. A theory is supported by a wide range of scientific evidence. Theories can change based on new evidence.