The Scientific Method• Universal approach to solving scientific

problems

Observations

• Make sure your observations are Quantitative. Something you can

count

• NOT Qualitative 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 Experiment1. Control Group

The group that you do nothing new to

2. Experimental Group The group with the independent variable The group you change

base

Kilo

Hecta

Deka

deci

centi

milli

micro

Mega

METRICCONVERSION

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-0.001

Micro-0.0000001 Nano-0.0000000001

SI = Système International d'unitésInternational 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= cm3

• 16mm= m

• 1mL = L• 32kg= g• 5um= m