1 Ms. Pollock 8th Grade Physical Science 2009 - 2010 The Nature of ScienceMs. Pollock8th Grade Physical Science
2 What Is Science? Science is a way of learning about the natural world. Why, how, or when?Observation very important
3 Asking QuestionsWith science, we can answer questions about the natural world.We cannot answer questions that involve emotion or beliefs.Science answers questions that are measureable and verifiable.
4 Possible Explanations The questions we ask are answered with available information.It is impossible to know everything.Explanations change as new information is obtained.
5 ExampleOnce believed that Apollo rode a chariot across the sky, was sunNow we know Earth rotates and revolves around the sun.
6 Scientific TheoriesScientific theory: an attempt to explain a pattern observed repeatedly in the natural worldNot just a guessObservationinvestigationBest explanation so farCan be changed for new information
7 Scientific TheoriesEvolution not yet completely proven
8 Scientific LawsScientific law: rule that describes a pattern in natureObserved repeatedlyAids in predictionCannot explain why something happens
10 Systems in ScienceSystem: a collection of structures, cycles, and processes that relate to and interact with each otherNot just found in scienceInteracting parts within a whole
11 Systems in ScienceRespiratory systemEndocrine systemSchool system
12 The Branches of Science Life scienceEarth sciencePhysical science
13 Life ScienceLife science: study of living systems and the ways in which they interactLiving organisms, their habitats and behaviorsHealth field, biology, zoos, botanists, farmers, beekeepers
14 Earth ScienceEarth science: study of Earth systems and the systems in spaceNonliving thingsWeather and climateGeology, meteorology, astronomy, oceanographyMaps and formations
15 Physical Science Physical science: study of matter and energy Living and nonliving thingsChemistry and physics
16 Careers Many careers in physical sciences Chemist, physicist Ultrasound and X-ray technician
17 Science and Technology Answers not helpful unless appliedTechnology: practical use of science; applied scienceExample light and fiber opticsA property of light passing through a fiber optic cable is science.Using a fiber optic cable to transmit information is technology.
18 Science and Technology DustbusterSolar energyProgrammable pacemakersVoice-controlled wheelchairsWireless communicationDoppler Radar
19 Section 1 Review1. Compare and contrast scientific theory and scientific law. Explain how a scientific theory can change.2. Explain why science can answer some questions, but not others.3. Classify the following statement as a theory or a law “Heating the air in a hot-air balloon causes the balloon to rise.”
20 Section 1 Review4. Think critically. Describe the importance of technology and how it relates to science.5. Infer. Scientists ask questions and make observations. What types of questions and observations would you make if you were a scientist studying schools of fish in the ocean?