Presentation on theme: "World of Physical Science & Exploring Physical Science"— Presentation transcript:
1 World of Physical Science & Exploring Physical Science Chapter 1 Sections 1 & 2World of Physical Science&Exploring Physical Science
2 I. That’s Science Everyday science! 1. putting on sunglasses 2. timing microwave popcorn3. using brakes on a bikeMatter & Energy Physical Science1. Physical Science = study of matter & energya. matter = ‘stuff’ everything is made ofb. energy1. all matter has energy2. partly responsible for rainbow, energy to throw a ball, food, matter that isn’t moving
3 a. studying all forms of matter & how they interact c. division of matter & energy =Chemistry & Physics2. Chemistrya. studying all forms of matter & how they interact1. properties & structure, how substances behave under certain conditions, how matter can go through changes2. periodic table
4 Energy & how it affects matter 3. PhysicsEnergy & how it affects matterUnderstand motion, force, gravity, electricity, light,& heatZero gravity force and motion
5 C. Physical Science is all around YOU, 1. the basis of other sciences2. Astronomy, Meteorology, Botany, Geology,Oceanography, Biology, EcologyD. Physical Science in action = jobs involving physical science – not necessarily scientists
7 What is the Scientific Method A series of steps that scientist use to answer questions and solve problems
8 Several Distinct Steps Ask a questionForm a hypothesisTest the hypothesisAnalyze the resultsDraw conclusionCommunicate results
9 Order of Steps Some time the steps are done in a different order Sometimes steps are skipped or repeatedIt depends on what works best to answer the question
10 TechnologyThe application of knowledge, tools, and materials to solve problems and accomplish task.Examples: computers, light bulbs
11 Goals Science and Technology to gain knowledge of the natural worldTechnologyto apply scientific understanding to solve problemsTechnology is sometimes called applied science
12 Group Activity Work in groups (Your Tables) Make a list of 10 observations about technology in the classroomTell how each example of technology improves the classroom for teaching
13 Ask a Question?Helps you focus your investigation and identify what you want to find out.Ask a question after you have made lots of observations
14 Observations Measurements Any use of senses to gather information ColorTemperatureVolumeMassWeight
15 Real World QuestionDog House Science or Technology
16 Form a HypothesisHypothesis- A possible explanation or answer to your questionMust be testableExample: A doghouse made with lighter colors will produce a cooler living environment.
17 Before Testing Hypothesis Make a prediction in the “If…..then…” format.Example: If heat is absorbed by dark colors and repelled by light colors then a doghouse made of light colors will be cooler.
18 Test the Hypothesis Test your prediction Conduct a controlled Experiment
19 Controlled Experiments Control GroupExperimental GroupBoth groups are the same except for one factor in the experimental group called the variableSometime a controlled experiment is not possibleExample researching starsHow would you conduct star research?
20 Data Any pieces of information acquired through experimentation Quantitative = data obtained by measurementQualitative = data obtained by visual observation
22 Analyze the Results Done after you collect and record data Calculations of DataOrganizing data in graphs and table
23 Number (in Millions) of Civilian/Noninstitutionalized Persons with Diagnosed Diabetes, United States, 1980–2006
24 Draw Conclusion Explaining your results Tell if your hypothesis was supported or notTell if project created new questions
25 Communicate Results Science Fair Journals Web Site New people might use your information and modify it.
26 Building Scientific Knowledge Theories-a unifying explanation for a broad range of Hypothesis.A theory can explain an observationPredict an observation possibly made in futureSpecial Theory of RelativityEvolutionCell TheoryAtomic Theory
27 Building Scientific Knowledge Laws- a summary of many experimental results and observationsTells how things workLaws tell what happen not why it happensExamples:Boyle's law, Charles' Law , Law of Gravity