Quiz 1: Fluid Mecahnics in soil

In a soil the gaps are not connected.

• True

• False

In a saturated soil the gaps are partially saturated with water.

• True

• False

In a dry soil at normal temperature (25°C):

• The water content is zero

• There is a residual amount of water due that is adsorbed by the solid grains

• There is no gaps

This figure represents:

• The elementary model of soil

• The density of solid grains

• The total density

The total density of a soil is:

• The total mass of soil divided by its total volume

• The mass of solid grains divided by the mass of water

• The mass of solid grains divided by the volume of solid grains

The density of solid grains is defined as:

• The mass of solid grains divided by its volume

• The mass of solid grains divided by the total volume of soil

• The mass of solid grains divided by the volume of water

The most important parmaters for calculating flow in soils are:

• Porosity and permeability

• water density and solid grains density

• water density and total density

The porosity is the ratio of the volume of gaps to the total volume.

• True

• False

The gravimetric water content is:

• The ratio of water mass to solid grain mass

• The ratio of water volume to the water volume

• The ratio of the water mass to the total mass of soil

The density of solid grains is always less than the densitu of water

• False

• True