WorksheetsPorosity
Total questions: 26
Worksheet time: 23mins
Name
Class
Date
1.
Porosity refers to...
a)
the shape of the particles
b)
The sorting of the particles
c)
% of pore space in a material
d)
% of cement in a material
2.
Impermeable materials...
a)
have an abundance of pores.
b)
let water in.
c)
have little to no pores.
3.
Porosity is dependent on all of the following EXCEPT...
a)
Particle shape
b)
Amount of cement
c)
Sorting
d)
Hardness
4.
Which of the following has the lowest porosity?
a)
Clay
b)
Silt
c)
Gravel
d)
Sand
5.
Water flows through permeable materials ____________________ than impermeable materials.
a)
slower
b)
faster
6.
If porosity is low then permeability is ______________.
a)
low
b)
high
7.
The ___________________ the grain size, the faster the water will move through the soil.
a)
more mixed
b)
smaller
c)
larger
8.
Poorly sorted soil...
a)
has low porosity
b)
has high porosity
c)
has high pore space
d)
means water will move through quickly
9.
Well sorted soil...
a)
has low porosity
b)
has low pore space
c)
has high porosity
d)
means water will move through slowly
10.
A sponge has high porosity. A rock can have it too. Porosity is...
a)
the inability to hold water
b)
the ability to hold water
c)
allowing water to pass through
11.
A soil sample with a large amount of space between the particles will have a
a)
High Porosity
b)
Low permeability rate
c)
High capillarity
d)
Low infiltration rate
12.
Flash flooding often occurs in city areas because
a)
Roads, pavements, and buildings reduce the infiltration of water into the ground
b)
Ground water storage is usually very large
c)
unoff decreases during precipitation
d)
The heat generated by city areas decreases actual evapotranspiration
13.
Base your answer to the following question on the diagram, which represents samples of soil and bedrock at Earth’s surface. The arrows represent possible infiltration of rainwater Which sample probably has the greatest porosity?
a)
Granite bedrock
b)
Pebble-and-sand soil
c)
Pebble soil
d)
Conglomerate bedrock
14.
The diagram represents three containers, A, B, and C, which were filled with equal volumes of uniformly sorted plastic beads. Water was poured into each container to determine porosity and infiltration time. See picture for question
a)
1
b)
2
c)
3
d)
4
15.
the measure of the storage space available in an aquifer.
a)
aquifer
b)
permeability
c)
porosity
d)
divide
16.
The measure of how easily water can flow through an aquifer.
a)
porosity
b)
permeability
c)
gradient
d)
divide
17.
If a rock is compressed and its volume decreases, how will the rock’s density and porosity be affected?
a)
Density and porosity will both decrease
b)
Density and porosity will both increase
c)
Density will increase and porosity will decrease
d)
Density will decrease and porosity will increase
18.
Which surface soil conditions allow the most infiltration of rainwater?
a)
steep slope and permeable soil
b)
steep slope and impermeable soil
c)
gentle slope and permeable soil
d)
gentle slope and impermeable soil
19.
Which diagram represents the soil with the greatest permeability?
a)
Choice 1
b)
Choice 2
c)
Choice 3
d)
Choice 4
20.
Soil with the greatest porosity has particles that are...
a)
poorly sorted and densely packed
b)
poorly sorted and loosely packed
c)
well sorted and densely packed
d)
well sorted and loosely packed
21.
Which set of conditions would produce the most runoff of precipitation?
a)
gentle slope and permeable surface
b)
gentle slope and impermeable surface
c)
steep slope and permeable surface
d)
steep slope and impermeable surface
22.
Which container has the lowest porosity?
a)
A
b)
B
c)
C
d)
A and B
23.
The measure of how easily water can flow through an aquifer.
a)
porosity
b)
permeability
c)
gradient
d)
divide
24.
If packing increases, porosity...
a)
increases
b)
decreases
c)
remains the same
25.
If particle size decreases, permeability...
a)
decreases
b)
increases
c)
remains the same
26.
A material with a high porosity has:
a)
Little space
b)
A lot of space
c)
Tall spaces
d)
High mass
100 %
