Variables

I've re-read the assessment sheet and have noticed that I need to include my variables for the experiment.

Independant Variables: The independant variables include the amount of soil that I take from Coogee beach, the chosen locations, the amount of water I take, and from the chosen locations. Other independant variables include the time period in which I have planned to obtain the samples which may alter the results.

Dependant Variables: The resulting pH levels, phosphate levels, salt levels, pollution levels, moisture content and organic content.

Controlled variables: The repeats of each experiment, the measurement of each sample and the location and duration of each sample. The types of equipment used must stay constant e.g. filter paper, silver nitrate solution, pH probe intial levels.