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Science (from the Latin scientia, meaning "knowledge" or "to know") is the effort to discover, and increase human understanding of how the physical world.

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Presentation on theme: "Science (from the Latin scientia, meaning "knowledge" or "to know") is the effort to discover, and increase human understanding of how the physical world."— Presentation transcript:

1 Science (from the Latin scientia, meaning "knowledge" or "to know") is the effort to discover, and increase human understanding of how the physical world works. Through controlled methods, scientists use observable physical evidence of natural phenomena to collect data, and analyze this information to explain what and how things work. Such methods include experimentation that tries to simulate natural phenomena under controlled conditions and thought experiments. Knowledge in science is gained through research.Latinknowledgediscoverphysicalworld scientistsobservablephysical evidencenaturalphenomenaexperimentationsimulateKnowledge research From Wikipedia, the free encyclopedia CHAPTER 1. ABOUT SCIENCE What is science?

2 CHAPTER 1. ABOUT SCIENCE What is physics? Science is the field of study which tries to describe and understand the order within the nature of the universe in whole or in part. It is a branch of science concerned with the properties of matter and energy and the relationships between them.

3 Science is a body of knowledge that A)describes order in nature. B)is an ongoing activity of humans. C)condenses knowledge into testable laws. D)All of the above choices are correct. E)None of the above choices are correct.

4 Scientific Method: (observation, reason, and experiment) CHAPTER 1. ABOUT SCIENCE 1. Recognize a problem. 2. Generate a hypothesis, a tentative description that is consistent with what you have observed. (Hypothesis: an explanation of an observation or experimental result) 3. Use the hypothesis to make predictions. 4. Do an experiment to test those predictions. 5. Formulate a rule to generalize the hypothesis, predictions, and experimental results.

5 CHAPTER 1. ABOUT SCIENCE Theory: a synthesis of a large body of information The Scientific Attitude (fact, law and theory): Fact: a general agreement by competent observers of a series of observations of a phenomenon. Law: a hypothesis that has not been contradicted after being tested over and over by experiment. It is often expressed in the form of an equation.

6 CHAPTER 1. ABOUT SCIENCE Scientific hypothesis: a hypothesis which is capable of being proved wrong.

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9 CHAPTER 1. ABOUT SCIENCE Which of the statements below is a scientific claim ? 1.Human beings will never set foot on the Moon. 2. Some of the laws that govern nature cannot be detected by scientists. 3.It is quite possible that in some other galaxy the laws of physics are fundamentally different than the laws we are acquainted with in this galaxy. Only statement 1 is scientific, because there is a test for its wrongness. Statement 2 has no test for its possible wrongness. Statement 3 is also unscientific. Finding one galaxy with different laws would prove the statement true, but what is the test for proving it wrong ?

10 ONE WHO MAKES A SCIENTIFIC CLAIM DELIBERATELY PLACES ONESELF AT RISK OF ADMITTING THE CLAIM IS WRONG… THE SCIENTIST SAYS, “IF YOU CONDUCT A TEST AND IT TURNS OUT TO BE NEGATIVE, THEN MY CLAIM IS WRONG.” TO BE A SCIENTIST, YOU MUST GRACFULLY ACCEPT THE OUTCOME OF A TEST WHETHER POSITIVE OR NEGATIVE. THAT IS THE SPIRIT OF INQUIRY! CHAPTER 1. ABOUT SCIENCE

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12 Systems of measurement Quantity Unit Symbol Lengthmeter m Masskilogram kg Timesecond s Force newton N Energyjoule J Currentampere A Temperaturekelvin K CHAPTER 1. ABOUT SCIENCE

13 Flow diagram describing the scientific method. CHAPTER 1. ABOUT SCIENCE

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