WorksheetsQuiz 1: Fluid Mecahnics in soil
Total questions: 15
Worksheet time: 8mins
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
The initial mass of a sample of soil is 45g. The sample is heated up to 105°C. Its mass becomes 30g. The water content of this sample is:
0.5
0.2
0.8
A pycnometer allows for measuring:
The density os solid grains
The density of water
The water content
This instrument can be used for:
Particle size analysis
For mesuring the density of soil
For measuring the porosity
When a pressure gradient exisits, water flow from the right to the left tank
through the gaps of the porous media
because the solid grains will move
because the gaps are not connected
In this figure
A is a confined aquifer and B is an unconfined aquifer
A and B are both confined aquifers
A is an unconfined aquifer and B is a confined aquifer
