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