Checking understanding of experimental methods, variables and controls

5 questions

Assessing knowledge of identifying variables, controls and planning scientific investigations.

Questions

1. In an experiment to test how different amounts of fertilizer affect plant growth, which factor is the independent variable?
2. A control group is used to show what would happen in the absence of the independent variable.
3. Which of the following is an example of a controlled variable in the fertilizer experiment?
4. Changing more than one variable at a time allows you to determine which variable caused the observed effect.
5. What is the first step when planning a scientific investigation?