Slide 3 of 21 What Science Is and Is Not What is the goal of science?
Slide 4 of 21 The goal of science is to: investigate and understand the natural world. investigate and understand the natural world. explain events in the natural world. explain events in the natural world. use those explanations to make useful predictions. use those explanations to make useful predictions.
Slide 5 of 21 Science is an organized way of using evidence to learn about the natural world. Body of knowledge
Slide 6 of 21 Thinking Like a Scientist Observation is the process of gathering information about events or processes in a careful, orderly way. Scientific thinking begins with observation.
Slide 7 of 21 The information gathered from observations is called data. Quantitative data: expressed as numbersQuantitative data: expressed as numbers
Slide 8 of 21 Qualitative data: characteristics that cannot be counted Qualitative data is usually the quality of data. For instance, saying a painting has a mixture blues and greens with splashes of white. It is what you can observe. Qualitative data is usually the quality of data. For instance, saying a painting has a mixture blues and greens with splashes of white. It is what you can observe.
Slide 9 of 21 Scientists use data to make inferences. An inference is a logical interpretation based on prior knowledge or experience.
Slide 10 of 21 Explaining and Interpreting Evidence A hypothesis is a proposed scientific explanation for a set of observations. A hypothesis may be ruled out or confirmed. They are NEVER WRONG! They are either supported or not supported by the data.
Slide 11 of 21 Hypotheses are tested by performing Hypotheses are tested by performing controlled experiments. controlled experiments.
Slide 12 of 21 Copyright Pearson Prentice Hall Researchers often work in teams to analyze, review, and critique each other’s data and hypotheses.
Slide 13 of 21 Science as a Way of Knowing Science is an ongoing process that involves: asking questions asking questions observing observing making inferences making inferences testing hypotheses testing hypotheses
Slide 14 of 21 Scientific understanding is always changing. Good scientists are skeptics who question both existing ideas and new hypotheses.
Slide 15 of 21 Science and Human Values An understanding of science and the scientific approach is essential to making intelligent decisions.
Slide 16 of 21 Decisions involve many factors besides scientific information, including: the society in which we live the society in which we live economic considerations economic considerations laws laws moral principles moral principles Citizens decide what to do when they vote.