Biology Internal Assessment Soil pH

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Biology Internal Assessment Lab

Question: In this experiment we will investigate how the moisture of the soil affects the growth of the Viola tricolor.

Hypothesis: The soil that is closer to the nearest water has more moisture, meaning that the Viola tricolor that grow there have more access to water which leads me to believe that the Viola tricolor that grow there are taller than the ones that grow in the dry soil areas.

Variables

Units

Range

Independent

Distance from water

Meters

Moisture (<5m)

Dry (>10m)

Dependent

Moisture in the soil

Grams

Controlled

The amount of soil collected in each case

Milliliters

50ml

Extraneous

Time of day, weather, season (autumn)

Apparatus:

* Calculator

* Scale

* Ruler

* 10 tubes/beakers

* 10 flowers (Viola tricolor species)

* Meter stick

Ways of treatment:

In order to collect moisture soil:

1.) Collect the soil that is 1 meter away from water.

2.) Collect the soil that is 2 meters away from water.

3.) Collect the soil that