1. Measurement and Scientific Method
   I. Measurement and Scientific Method – A series of logical steps to follow in order to solve problems.
   
   
   A. Seven Steps
   1. Observe – most questions begin with this step.
   2. Formulate a question – what do you want to know.
   3. Collect data – what is already known about your question?
   4. Form a hypothesis – propose an answer to your question based on observations and data.
   5. Test the hypothesis:
   a. this is done by experimenting
   b. a good experiment has only 1 variable
   c. variable – anything that can change in an experiment
   6. Observe, observe, observe
   7. Draw conclusions – did the results support your hypothesis?
   
2. B. No experiment is a failure. However, they may have results that you do not want. We must remember they are all observations of what is happening in the world. When an experiment does not match our hypothesis a scientist takes the results, revises them and formulates a new hypothesis. After formulating a new hypothesis the scientist plans a new experiment.
   
3. C. Scientists use different scientific tools.
   Some examples are: Microscopes, telescopes, spectrophotometers, and particle accelerators.