Chapter 1

1. Chapter 1 Introduction to Science

2. Branches of Science • Social Science – behavior why animals act the way they do. (Sociology, Psychology, Animal Behaviorist. • Natural Science – Biological Science, Physical Science and Earth/Space Science. • Biology • Botany • Zoology • Physical Science • Chemistry • Physics • Earth / Space • Geology • Meteorology

3. Scientific Lingo • Theory – Why something works. (A system of ideas that explains many related observations and is supported by a large body of evidence acquired through scientific investigation.) • Law – How something works. (A descriptive statement or equation that reliably predicts events under certain conditions.) • Quantitative – described with numbers / statistics. • Qualitative – described with words. • Model – something used to represent something that is too big, small or difficult to display. (The day after tomorrow.)

4. Constant Variables Control Group Experimental Group Placebo Effect The importance of having clear, concise repeatable procedures. The importance of publishing findings. Scientific Method

5. Base Units • Length meter m • Mass Kilogram Kg • Time Second s • Temperature Kelvin K • Light Intensity Candela cd • Amount of sub. Mole mol • Electric Current Ampere A

6. Derived Units • Area meter squared m2 • Volume meter cubed m3 • Velocity meter / second m/s • Acceleration meter / second sq m/s2 • Force mass*acceleration N • Pressure force / area Pa • Work force*distance Nm or J • Power work / time W or J/s

7. Prefix Chart • Mega M 106 • Kilo k 103 • BASE • Centi c 10-2 • Milli m 10-3 • Micro u 10-6 • Nano n 10-9 • Practice Problems:

8. Temperature Scales • Farenheit – 32 freezing of pure water 212 boiling of pure water at 1 atm pressure • Celsius – 0 freezing 100 boiling of water • Kelvin – 0 temperature at which all molecular motions stops 0k = -273.15 C • Practice Problems:

9. Graphing • Line – continuous display of data • Bar – discontinuous multiple items at same time • Pie – parts of the whole