Chapter 1 Introduction to Science
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 BotanyZoology –Physical Science ChemistryPhysics –Earth / Space GeologyMeteorology
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.)
Scientific Method ConstantVariables Control Group Experimental Group Placebo Effect The importance of having clear, concise repeatable procedures. The importance of publishing findings.
Base Units Lengthmeterm MassKilogramKg TimeSeconds TemperatureKelvinK Light IntensityCandelacd Amount of sub.Molemol Electric CurrentAmpereA
Derived Units Areameter squaredm2 Volumemeter cubedm3 Velocitymeter / secondm/s Acceleration meter / second sqm/s2 Forcemass*accelerationN Pressureforce / areaPa Workforce*distanceNm or J Powerwork / time W or J/s
Prefix Chart MegaM10 6 Kilok10 3 BASE Centic10 -2 Millim10 -3 Microu10 -6 Nanon10 -9 Practice Problems:
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 = C Practice Problems:
Graphing Line – continuous display of data Bar – discontinuous multiple items at same time Pie – parts of the whole