Scientific%20Investigations

1
Scientific Investigations

• What are the parts of a scientific investigation?
• What is a fair test and a variable?

2
Fair Test

• Where only one factor (variable) is changed
  during the test to make sure that factor affects
  the test.
• Ex Jill wants to find out What is the effect
  of the number of coils on an electromagnet?
• What is the variable? Is this a fair test?

3
Variable

• Manipulated the one factor that is changed in
  the test
• Responding because the manipulated variable is
  changed, how does it affect the test?
• Ex Think about Jills experiment? What is her
  manipulated variable? Because that changes, what
  is going to be the responding variable?

4
Scientific Procedure

• Identify a testable question that can be
  investigated (one variable)
• Do some research on the topic
• State a prediction about your question based off
  the information from your research
• Ex What should Jill do after she knows she
  wants to find out how the coils affect the
  electromagnet?

5
Scientific Procedure

• Design an experiment
• List the materials you need
• List the steps you will need to take to
  investigate
• Ex What will Jill need and what will she need
  to do?

6
Scientific Procedure

• Record or organize data (observations) in charts
  and graphs.
• Study the data in the graphs or charts.

7
Graphing

• This is what Jill found out, make a graph on the
  back of your paper.
• Looking at the data, should you use a bar graph
  or line graph? What type of data is this?

coils 20 30 40 50
Strength washers 10 18 35 60
8
Scientific Procedure

• Explain the results. What happened?
• Compare results to prediction. Was your
  prediction correct? Is it okay if it wasnt
  correct?