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Chapter 1

Chapter 1. About Science. What is Science?. Science is knowledge applied to the natural environment through careful observation. Science is trying to explain the world around us Science is a way of thinking Science is a system of knowledge based on facts or principles

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Chapter 1

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  1. Chapter 1 About Science

  2. What is Science? • Science is knowledge applied to the natural environment through careful observation. • Science is trying to explain the world around us • Science is a way of thinking • Science is a system of knowledge based on facts or principles • The word science was taken from the Latin word “scientia” meaning “to know”

  3. A Scientist: Finds answers through research and experimentation. Confirms results by repeating experiments Learns more by designing and conducting new experiments

  4. What is Physics? • Physics is the Branch of Science which studies all acknowledged physical objects (matter) and their behavior (energy) in the universe. • Physics uses mathematics to explain and predict natural phenomenon. • Principles and laws of physics can be expressed as mathematical equations.

  5. Early Physicists Galileo developed many ideas on mechanics, optics, and wave phenomena using what is now known as the scientific method of inquiry. The Book of nature is written in mathematical characters. ----  Galileo Galilei

  6. All Scientists Must: Study problems in an organized manner Make an educated guess as to why things happen Test their ideas through experimentation Collect Data Analyze Results Draw a Conclusion

  7. Testing a Hypothesis • Experiments often generate more observations • Analyzing data allows us to draw conclusions about the hypothesis • The hypothesis can be modified or discarded if it is not supported by experimental evidence.

  8. Scientific Theory • A reasoned explanation tested by many observations and experiments • Tells why things are • Three things • Must explain clearly and simply • Must be repeatable • Must be able to make predictions • Theories can be changed or modified by new evidence

  9. It’s the Law When the theory is used to predict new phenomenon then it may, overtime, become what is called a Scientific Law. (Describes Relationships.)

  10. Applied Science • Technology is the application of science for practical purposes.

  11. Making Models • Models are used to translate complex concepts into physical objects. • Computer models use a variety of variables to simulate real world events.

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