Underline the most correct choice Trial pits and trenches are the most expensive method of
shallow soil exploration (True, False) Sinkholes in soils max be indicated by N: 0-2 SPT values
(Ture, False) Milli Gal is a unit for (gravity, magnetic, electrical) surveys. In electromagnetic
surveys sandstone shows (low, high) conductivity. Buried mine shafts are indicated by positive
next to (+ve, -ve) magnetic anomalies. The most expensive drilling is (rock probing, coring,
percussion drilling). You can get aerial photographs in Jordan from (NRA, RJGC, Water
Authority) For road lines, site investigation boreholes should be (
Solution
1. Yes
Trial pits and trenches are tho cheapest method of exploration in shallow deposits, since these
can be used in all types of soils. In this method, pits are excavated at the site, exposing the sub-
soil surface thoroughly.
Soil samples are collected at various levels. The biggest advantage of this method is that soil
strata can be inspected in their natural condition and samples (disturbed or undisturbed) can be
conveniently taken.
2.no,sinkholes is indicated by depth
3.Gravity
The SI derived unit for acceleration is the meter/square second.
1 meter/square second is equal to 100000 milligal.
4.low
The electrical conductivity of rocks results from conduction through the bulk solution occupying
the pores and from surface conduction occurring at the fluid/grain interface. The nature of the
surface electrical conductivity of shaly and clean sands and sandstones is examined. Surface
conduction is characterized by the specific surface conductance which is the sum of three
contributions: (i) Conduction within the electrical diffuse layer, which makes a negligible
contribution to the total specific surface conductance, (ii) Conduction in the Stern layer, which is
shown to vary significantly with the salinity of the pore fluid at low salinities (106 to 103 mol
11), but becomes independent of salinity at higher salinities, (iii) A mechanism operating directly
on the mineral surface, independent of salinity, and perhaps associated with proton transfer. At
salinities higher than 103 mol 11 and at 25°C, the specific surface conductance of quartz and
clays is equal to 8.9×109 S and 2.5×109 S respectively. Equations describing the influence of
surface conductivity and microstructure upon the macroscopic electrical conductivity of sands,
sandstones, and shales are also developed
5.negative
6.rock>coring>percussion
7.Water authority
8.30-300m
9.tricone roller
Tricones are one of the most widely used drill bits in the rock drilling industry. Bit Brokers
International has it\'s own line of tricone bits. Here is some of our Open Bearing Steel Tooth
Bits.
10.Clay
11.infrared
12.texture
13.Yes
14.buildings.
Introduction to ArtificiaI Intelligence in Higher Education
Underline the most correct choice Trial pits and trenches are the mo.pdf
1. Underline the most correct choice Trial pits and trenches are the most expensive method of
shallow soil exploration (True, False) Sinkholes in soils max be indicated by N: 0-2 SPT values
(Ture, False) Milli Gal is a unit for (gravity, magnetic, electrical) surveys. In electromagnetic
surveys sandstone shows (low, high) conductivity. Buried mine shafts are indicated by positive
next to (+ve, -ve) magnetic anomalies. The most expensive drilling is (rock probing, coring,
percussion drilling). You can get aerial photographs in Jordan from (NRA, RJGC, Water
Authority) For road lines, site investigation boreholes should be (
Solution
1. Yes
Trial pits and trenches are tho cheapest method of exploration in shallow deposits, since these
can be used in all types of soils. In this method, pits are excavated at the site, exposing the sub-
soil surface thoroughly.
Soil samples are collected at various levels. The biggest advantage of this method is that soil
strata can be inspected in their natural condition and samples (disturbed or undisturbed) can be
conveniently taken.
2.no,sinkholes is indicated by depth
3.Gravity
The SI derived unit for acceleration is the meter/square second.
1 meter/square second is equal to 100000 milligal.
4.low
The electrical conductivity of rocks results from conduction through the bulk solution occupying
the pores and from surface conduction occurring at the fluid/grain interface. The nature of the
surface electrical conductivity of shaly and clean sands and sandstones is examined. Surface
conduction is characterized by the specific surface conductance which is the sum of three
contributions: (i) Conduction within the electrical diffuse layer, which makes a negligible
contribution to the total specific surface conductance, (ii) Conduction in the Stern layer, which is
shown to vary significantly with the salinity of the pore fluid at low salinities (106 to 103 mol
11), but becomes independent of salinity at higher salinities, (iii) A mechanism operating directly
on the mineral surface, independent of salinity, and perhaps associated with proton transfer. At
salinities higher than 103 mol 11 and at 25°C, the specific surface conductance of quartz and
clays is equal to 8.9×109 S and 2.5×109 S respectively. Equations describing the influence of
surface conductivity and microstructure upon the macroscopic electrical conductivity of sands,
sandstones, and shales are also developed
