(Most of this information is common sense. This note is just for review.)

Scientific method - a logical approach to solving problems by observing and collecting data, formulating hypotheses, testing hypotheses, and formulating theories that are supported by data

• Hypothesis - a testable explanation to a question/problem based on data/observations

• Controls - experimental conditions which remain the same/constant

• Variables - experimental conditions which may change

• Independent variable - a variable that stands on its own/does not rely on other variables. May be changed by the experimenter

• Dependent variable - a variable that may change depending on the value of the independent variable

• (In Ms. Fu’s slide) there are 5 steps

  • observing

  • hypothesizing

  • testing

  • theorizing

  • communicating

Qualitative data - data that cannot be quantified; data that refers to non-numerical qualities rather than numbers

Quantitative data - numerical data

Theory - a widely accepted explanation of natural phenomena that has been repeatedly tested

Lab Safety

• wear goggles

• tie back long hair

• wear closed-toe shoes

• long sleeves/pants

• don’t mess around in the lab

• no eating or drinking in the lab

• dispose of things properly

• if glass breaks, go to teacher