1. 1.2 Methods of Scientists

2. Scientific Method Identify a Problem
Form a hypothesis - suggested explanation for an observation
Test hypothesis
Analyze – record all data
Conclusion

3. Measurement SI system Length – meter stick (meters, cm, mm…)
Weight and mass – weight is the measure of gravitational force on an object
Unlike mass, weight varies upon locations
Weight = Newtons
Mass = kg

4. Measurement (cont) Area and Volume Density Temperature
Area is amount of surface included within a set of boundaries (cm2)
Volume is the amount of space occupied by an object (cm3)
Density
Measure of the amount of matter that occupies a given space (mass/volume)
Temperature
Temp is usually measured in Celsius
SI is also done in Kelvin (coldest temp possible is absolute zero