Scientific Approach

1
Scientific Approach

• Making observations/collect data
• Formulate a hypothesis
• Test the hypothesis
• Summarize tested hypotheses into a theory
• Summarize natural behavior or occurrences into a
  scientific law

2
Scientific Methods

• Definitions
• Hypothesis -
• a plausible or logical statement that attempts
  to explain the observation or data.
• Theory
• a set of (tested) hypotheses that explain a
  certain behavior of nature.
• Scientific Law -
• a concise statement about a natural phenomenon
  or behavior.

3
Units of Measurements

• English (nonmetric) Units
• Mass ounce (oz.), pound (lb.), ton
• Length inch, ft., yd., miles
• Volume pint, quart, gallon, in3, ft3, etc.
• Area acre, hectare, in2, ft2, mi2.

4
Units of Measurements

• Metric Units
• Mass milligram (mg), gram (g), kilogram (kg),
• Length nm, mm, mm, cm, m, km
• Area cm2, m2, km2
• Volume mL, L, cm3, m3.

5
Units of Measurements

• SI Units
• Mass kilogram (kg)
• Length meter (m)
• Area meter square (m2)
• Volume cubic meter (m3)
• Temperature Kelvin (K)
• Energy Joule (J)