INTRODUCTION
Scientific inquiry is a process used to investigate the physical world. The experimental scientific method provides an organized approach for answering testable questions and confirming hypotheses. Appropriate experimental questions investigate a causal link between the independent and dependent variables. For example, how does the amount of fertilizer affect the growth in height (cm) of plants?

In this task, you will use the experimental scientific method to investigate a relevant, testable problem and communicate your findings in an organized written report. You will also design and implement a scientific experiment that investigates a topic from the life, earth, or physical sciences. The experiment must use appropriate methods, tools, technologies, and quantitative measurement units. For a list of topic ideas for possible science experiments, refer to the “Topic List” attachment. (See the note below for important details on which topics will not be accepted.)