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World of Physical Science & Exploring Physical Science

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1 World of Physical Science & Exploring Physical Science
Chapter 1 Sections 1 & 2 World of Physical Science & Exploring Physical Science

2 I. That’s Science Everyday science! 1. putting on sunglasses
2. timing microwave popcorn 3. using brakes on a bike Matter & Energy  Physical Science 1. Physical Science = study of matter & energy a. matter = ‘stuff’ everything is made of b. energy 1. all matter has energy 2. 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 & Physics 2. Chemistry a. studying all forms of matter & how they interact 1. properties & structure, how substances behave under certain conditions, how matter can go through changes 2. periodic table

4 Energy & how it affects matter
3. Physics Energy & how it affects matter Understand motion, force, gravity, electricity, light, & heat Zero gravity force and motion

5 C. Physical Science is all around YOU,
1. the basis of other sciences 2. Astronomy, Meteorology, Botany, Geology, Oceanography, Biology, Ecology D. Physical Science in action = jobs involving physical science – not necessarily scientists

6 Using The Scientific Method

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 question Form a hypothesis Test the hypothesis Analyze the results Draw conclusion Communicate results

9 Order of Steps Some time the steps are done in a different order
Sometimes steps are skipped or repeated It depends on what works best to answer the question

10 Technology The 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 world Technology to apply scientific understanding to solve problems Technology is sometimes called applied science

12 Group Activity Work in groups (Your Tables)
Make a list of 10 observations about technology in the classroom Tell 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
Color Temperature Volume Mass Weight

15 Real World Question Dog House Science or Technology

16 Form a Hypothesis Hypothesis- A possible explanation or answer to your question Must be testable Example: 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 Group Experimental Group Both groups are the same except for one factor in the experimental group called the variable Sometime a controlled experiment is not possible Example researching stars How would you conduct star research?

20 Data Any pieces of information acquired through experimentation
Quantitative = data obtained by measurement Qualitative = data obtained by visual observation


22 Analyze the Results Done after you collect and record data
Calculations of Data Organizing 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 not Tell 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 observation Predict an observation possibly made in future Special Theory of Relativity Evolution Cell Theory Atomic Theory

27 Building Scientific Knowledge
Laws- a summary of many experimental results and observations Tells how things work Laws tell what happen not why it happens Examples: Boyle's law, Charles' Law , Law of Gravity

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