Experiments

Composition of two soils.

Two soils. Graduated cylinders. Water. Electronic balance.

Take the same weight of samples.

Use deionised water.

Allow to settle.

Tabulate

Soil drainage.

Three stands. Three funnels. Glass wool or cotton wool. Three different soil samples. Six graduated cylinders. Timer.

Wear gloves when handling glass wool.

Measure the volumes of water after a fixed time.

Relate rate of drainage to soil type.

Tabulate

Graph

Water, humus and inorganic matter in soils.

Two soil samples. Hotplate. Electronic balance. Evaporating basins. Desiccator. Bunsen burner.

Same weight of both Soils.

Cool before re-weighing.