Presentation on theme: "How do Scientists Think?"— Presentation transcript:
1 How do Scientists Think? Chapter 1: Introduction to Physical ScienceMrs. Butler’sPhysical Science ClassAim: What is Physical Science?How do Scientists Think?Scientists use the skills of observing, inferring, and predicting to learn more about the natural world
2 Observing: using one or more senses to gather information Qualitative observations=descriptions that do not involve numbers or measurementsQuantitative observations=are measurements
3 Inferring: interpreting or explaining the reasons for your observations Predicting:making a forecast of what will happen in the future based on past experience or evidence
4 The Study of Matter and Energy Physical Science is the study of matter, energy, and the changes they undergo.So what is matter?So what is energy?Matter is anything that occupies space and has mass.Energy is the ability to do work or cause a change.
5 Physical Science is divided into two main areas Chemistry- the study of the properties of matter and how matter changesPhysics- the study of matter and energy and how they interact
6 Aim: Scientific Inquiry The process of InquiryPosing questionsdeveloping hypothesesdesigning experimentscollecting datainterpreting datadrawing conclusionscommunicating ideas and results
7 What is a hypothesis?A hypothesis is a possible answer to a scientific question or explanation for a set of observations.Researchers must be able to carry out investigations and gather evidence that will either support or disprove the hypothesis
8 How do scientists test their hypothesis? Begin experiment by determining variablesVariables are factors that can change in an experiment. In a well designed experiment only one variable is purposely changedManipulated variable: the variable that is changed (by the scientist)(also known as independent variable)Responding Variable: the variable that is expected to change because the manipulative variable changed (also known as the dependent variable)Controlled Experiment an investigation in which all variables except one remain the same.
9 PHSchool.comScientists use models and develop laws and theories to increase people’s understanding of the natural world.Scientific law is a statement that describes what scientists expect to happen every time under a particular set of conditions.Scientific theory is a well-tested explanation for a wide range of observations or experimental results.Complete worksheet review and reinforce 1-2 scientific Inquiry in class (10 minutes)
10 Lab Safety:Behavior LISTEN AND FOLLOW INSTRUCTIONSWhat to do in case of an accidentBroken glass and equipmentGoggles, Aprons, gloves, shoesMaterials: respect, pick up, and put awayFire: Long Hair, TiesDo NOT touch or experiment on your own without my approvalProcedures during lab timeLab RubricHomework: Read section 1-3, Complete worksheets 1-3 review and reinforce;return signed safety sheets
11 Aim: What is Technology? Technology is a way of changing the natural world to meet human needs or solve problemsAn Engineer is someone who is trained to use both technology and scientific knowledge to solve problems.
12 The Technology Design Process Identify the needResearch the problemDesign a solution (brainstorm, constraints, trade-trade offs)Build a prototypeTroubleshoot and redesignCommunicate the solutioncorrect: 1-3 review and reinforce
13 Technology and Society Technology as a SystemHow would you describe a system?Something made up of parts that work togetherA technological system includes a goal, inputs, processes, outputs, and, in some cases, feedback.They are designed to achieve a particular goal, or purpose.Technology and SocietyHow has technology affected our society?View on line Discovery School Video Field trip Intro. to Physical Science.