Define the following terms

Define the terms water content, porosity and void ratio as applied to soil. Derive the relationship between the porosity and the void ratio.

In a test on a soil sample, the following result were obtained:

Total volume of soil in its natural state 645ml

Total mass of soil after oven drying 1050g

Mass of pycnometer 40g

Mass of pycnometer full of water 674g

Mass of pycnometer and dry soil 485g

Mass of pycnometer and soil plus water 946g

Determine the specific gravity of the soil particles and the void ratio of the soil.