Table of Contents How Science Changes Vocabulary Scientific

Table of Contents How Science Changes

Vocabulary Scientific Theory: is a well-tested explanation of a scientific theory. Scientific Law: Is a statement that describes what scientist expect to happen every time

How Does Scientific Knowledge Change? Pg. 73 Scientific knowledge changes as a result of • new evidence • new interpretations of existing evidence. For example, in the early twentieth century, Marie Curie observed that the element radium was giving off thermal energy at a steady rate. No scientists could explain why this was happening because they thought of mass and energy as separate quantities. Albert Einstein had a new interpretation for Curie’s evidence. He thought that mass could be converted to thermal energy and vice versa. Einstein’s new interpretation of existing evidence changed scientific knowledge.

Comparison of Scientific Law and Scientific Theory pg. 74 Scientific Law Scientific Theory A scientific law is a statement that A scientific theory is a well-tested describes what scientists expect to explanation for a wide range of happen every time under a particular observations or experimental results. set of conditions. Both scientific theories and scientific laws are developed slowly through repeated observation and experimentation. A scientific theory connects large sets of related observations by one explanation. Examples of scientific theories: Examples of scientific Law: the law of gravity states that all objects the atomic theory and the cell theory. The atomic theory states that all substances in the universe attract each other. are made up of tiny particles called atoms. Unlike a theory, a scientific law The cell theory states that cells are the describes an observed pattern in basic units of structure and function in nature without attempting to explain living things. it.

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