1.2 Methods Of Science

• Identify the problem or determine what you want to know • Hypothesis • Experiment

Planned, organized approach to solving a problem

The factor that is manipulated by the experimenter

A factor that can change if the independent variable changes

Factors that do not change during the experiment

Standard system of units that most scientific studies & experiments use

Standard SI: meter(m) 100m= 1cm. 1000cm= 1km

Measure of gravitational force on an object • measure with a scale • SI unit: newton(N)

• SI unit: kilogram(kg) - doesn’t change with an objects location

The amount of surface included within a set of boundaries & is expressed in sq. units of length (m^2 or cm^2) Volume: cm^3 - solid object: m^3 - fluid: mL or L

Measure of the amount of matter that occupies as given space (g/cm^3, g/mL, kg/m^3)

interval between 2 events & measured with watch or clock- seconds(s)

measure of the average vibrations of the particles that make up a material - measured with thermometer on the Celsius (C) scale

used to express the number as a multiplier & a power of 10