The Scientific Method Universal approach to solving scientific problems

Observations Make sure your observations are Quantitative. SSomething you can count NOT Qualitative FFeelings, relative measurements

Give me an example of quantitative observation of this picture of the cast of House M.D.

Constructing an Experiment Tests ONLY 1 variable at a time Independent Variable  What you change in the experiment Dependent Variable  What change because of the independent Variable  What you measure Controls (constants) controlled variables  What stays the same in the whole experiment

2 Groups in an Experiment 1. Control Group  The group that you do nothing new to 2. Experimental Group  The group with the independent variable  The group you change

basebase KiloKilo HectaHecta DekaDeka decideci centicenti millimilli micromicro MegaMega METRIC CONVERSION

SI UNITS Giga-1,000,000,000,000 Mega-1,000,000,000 Kilo-1,000 Heca-100 Deca-10 Base-1 Deci-0.1 Centi-0.01 Milli Micro Nano SI = Système International d'unités International System of Units

SI UNITS cont… Length = meters (m)  Metric Ruler Volume = liters (L)  Graduated Cylinder Weight = grams (g)  Triple Beam/ Electronic Balance Temperature = Celsius (C°)  Thermometer

1000m=km 2235cm = um 0.7g=mg 15m = mm 49mL= cm 3 16mm= m 1mL = L 32kg=g 5um=m