Gamma rays have a very small
A) energy.
B) frequency.
C) mass.
D) wavelength.
Answer: ...
Suppose you are listening to a radio station that broadcasts at a frequency of 97 Mhz (megahertz). Which of the following statements is true?
Suppose you are listening to a radio station that broadcasts at a frequency of 97 Mhz (megahertz). Which of the following statements is true?
A)...
Which of the following statements is true of green grass?
Which of the following statements is true of green grass?
A) It absorbs red light and emits green light.
B) It absorbs red light and reflects...
Suppose you have a 100-watt light bulb that you leave turned on for one minute. How much energy does it use?
Suppose you have a 100-watt light bulb that you leave turned on for one minute. How much energy does it use?
A) 6,000 joules
B) 6,000 watts
C)...
You observe a distant galaxy. You find that a spectral line of hydrogen that is shifted from its normal location in the visible part of the spectrum into the infrared part of the spectrum. What can you conclude?
You observe a distant galaxy. You find that a spectral line of hydrogen that is shifted from its normal location in the visible part of the spectrum...
The spectra of most galaxies show redshifts. This means that their spectral lines
The spectra of most galaxies show redshifts. This means that their spectral lines
A) have wavelengths that are longer than normal.
B) always...
Suppose you want to know the chemical composition of a distant star. Which piece of information is most useful to you?
Suppose you want to know the chemical composition of a distant star. Which piece of information is most useful to you?
A) The peak energy of...
According to the laws of thermal radiation, hotter objects emit photons with
According to the laws of thermal radiation, hotter objects emit photons with
A) a lower average frequency.
B) a shorter average wavelength.
C) a lower...
Thermal radiation is defined as
Thermal radiation is defined as
A) radiation with a spectrum whose shape depends only on the temperature of the emitting object.
B) radiation produced...
Suppose you look at a spectrum of visible light by looking through a prism or diffraction grating. How can you decide whether it is an emission line spectrum or an absorption line spectrum?
Suppose you look at a spectrum of visible light by looking through a prism or diffraction grating. How can you decide whether it is an emission line...
A soil is formed in a temperate region where rains are expected in the summer. There is not enough rainfall to cause extensive leaching and a calcic horizon is found. Such a soil would probably be classified in the _________ moisture region.
A soil is formed in a temperate region where rains are expected in the summer. There is not enough rainfall to cause extensive leaching and a calcic...
Mollisols most often develop under conditions:
Mollisols most often develop under conditions:
Answer: That allow organic matter to accumulate without strong soil acidificatio...
Consider four soils that are the same age. The deepest soil profile would most likely develop on:
Consider four soils that are the same age. The deepest soil profile would most likely develop on:
Answer: Coarse grained transported sedimen...
Which soil color indicates good drainage?
Which soil color indicates good drainage?
Answer: Yello...
Till soils are:
Till soils are:
Answer: Composed of particles of many size...
Over a twenty year period, the bulk of the soil lost by water erosion will result from:
Over a twenty year period, the bulk of the soil lost by water erosion will result from:
Answer: A gradual steady process occurring with each...
Aquic soils generally have _________________ relative to nearby non-aquic soils.
Aquic soils generally have _________________ relative to nearby non-aquic soils.
Answer: Grayer color...
Colluvial deposits are:
Colluvial deposits are:
Answer: Materials moved by gravit...
Which of the soil forming factors most strongly influence the texture and chemical composition of the soil in Iowa?
Which of the soil forming factors most strongly influence the texture and chemical composition of the soil in Iowa?
Answer: Parent materia...
An Ultisol might have which of the following horizon sequences?
An Ultisol might have which of the following horizon sequences?
Answer: Ochric, argilli...
A soil with an A/C profile sequence would be considered a mature soil.
A soil with an A/C profile sequence would be considered a mature soil.
Answer: Fals...
A fluvent belongs to the order
A fluvent belongs to the order
Answer: Entiso...
Moraines are landscape features of _______________ parent material.
Moraines are landscape features of _______________ parent material.
Answer: Til...
The color of the A horizon of Mollisols normally is:
The color of the A horizon of Mollisols normally is:
Answer: Blac...
The ______________ horizon is a zone of silicate clay accumulation.
The ______________ horizon is a zone of silicate clay accumulation.
Answer: Argilli...
Alluvium toxicity to plants is most likely to be a problem with:
Alluvium toxicity to plants is most likely to be a problem with:
Answer: Ultisol...
The solder soil is found at 8,000 feet in a humid microclimate in the white mountains of Arizona. It is shallow to bedrock and contains an ochre epipedon over a basic argillic horizon.
The solder soil is found at 8,000 feet in a humid microclimate in the white mountains of Arizona. It is shallow to bedrock and contains an ochre epipedon...
Suppose you took a series of random samples across the surface of each of the following sediments. In which one would you likely find one or more samples with a sandy texture?
Suppose you took a series of random samples across the surface of each of the following sediments. In which one would you likely find one or more samples...
Fertile grassland soils in Iowa that are high in nutrients, that have good drainage and a good moisture supply would most likely be (have) ______________ in the B horizon.
Fertile grassland soils in Iowa that are high in nutrients, that have good drainage and a good moisture supply would most likely be (have) ______________...
Outwash is often a good:
Outwash is often a good:
Answer: Source of grave...
As soils mature from fresh parent material all of the following occur except:
As soils mature from fresh parent material all of the following occur except:
Answer: The pH of the solum increase...
Which of the following orders has moderately good physical properties, has an ochric epipedon that is slightly acidic and leached, is basic in the argillic horizon and responds well to lime, fertilizer and good management?
Which of the following orders has moderately good physical properties, has an ochric epipedon that is slightly acidic and leached, is basic in the argillic...
Compare a soil in a depression to a well drained soil upslope from the first soil. One would expect the soil in the depression to:
Compare a soil in a depression to a well drained soil upslope from the first soil. One would expect the soil in the depression to:
Answer: Be...
If the energy level of a transporting agent changes with distance it will stratify:
If the energy level of a transporting agent changes with distance it will stratify:
Answer: Horizontall...
A thin, light colored surface horizon with a high base status and good structure is called a(n) ____________________ epipedon.
A thin, light colored surface horizon with a high base status and good structure is called a(n) ____________________ epipedon.
Answer: Ochri...
In most of Southern Iowa, as you walk from the ridge top to the drainage way the most likely sequence of parent material would be:
In most of Southern Iowa, as you walk from the ridge top to the drainage way the most likely sequence of parent material would be:
Answer: L...
In site lab when a mapping unit was rated as to is suitability for houses with basements a sever shrink-swell problem was noted. In order to evaluate the seriousness of this problem you also need to know the _________ of this mapping unit.
In site lab when a mapping unit was rated as to is suitability for houses with basements a sever shrink-swell problem was noted. In order to evaluate...
A soil with an accumulation of iron and aluminum oxides in the clay fraction of the B horizon would be a(n):
A soil with an accumulation of iron and aluminum oxides in the clay fraction of the B horizon would be a(n):
Answer: Oxiso...
Trees growing in humid temperate climates generally require __________ grasses growing in the same vicinity.
Trees growing in humid temperate climates generally require __________ grasses growing in the same vicinity.
Answer: Fewer bases tha...
Loess can be distinguished from alluvium in that loess is ____ while alluvium is ___.
Loess can be distinguished from alluvium in that loess is ____ while alluvium is ___.
Answer: Located in the uplands downwind from the flood...
The horizon sequence of an Alfisol is best described as:
The horizon sequence of an Alfisol is best described as:
Answer: A-E-Bt-...
The color of a BCg horizon is probably ____________ in color.
The color of a BCg horizon is probably ____________ in color.
Answer: Gra...
A soil is classified as a Hydric Borofibrist. At the suborder level this soil would be classified as a(n):
A soil is classified as a Hydric Borofibrist. At the suborder level this soil would be classified as a(n):
Answer: Fibris...
A poorly drained soil is likely to:
A poorly drained soil is likely to:
Answer: Have a low rate of leaching...
Entisols that have been disturbed or mixed by human activity are called:
Entisols that have been disturbed or mixed by human activity are called:
Answer: Arent...
External drainage is related primarily to:
External drainage is related primarily to:
Answer: The shape of the landscap...
As soil temperature increases in a udic moisture regime in the United States, which of the following occurs?
As soil temperature increases in a udic moisture regime in the United States, which of the following occurs?
Answer: Solum depths increas...
An argillic horizon must be present in all:
An argillic horizon must be present in all:
Answer: Ultisol...
One problem with Iowa till soils is that they:
One problem with Iowa till soils is that they:
Answer: Are prone to having a compacted subsoi...
Soils develop more slowly if the parent material is:
Soils develop more slowly if the parent material is:
Answer: Coole...
The rainfall index (R) in the Universal Soil Loss Equation is higher when:
The rainfall index (R) in the Universal Soil Loss Equation is higher when:
Answer: The total rainfall is higher, the average rainstorm intensity...
Entisol is the name of a(n) ___________ in soil taxonomy.
Entisol is the name of a(n) ___________ in soil taxonomy.
Answer: Orde...
In site lab, a(n) _____________ slope is the steepest slope on which rotations with row crops and meadow are adequate to control erosion with conventional tillage.
In site lab, a(n) _____________ slope is the steepest slope on which rotations with row crops and meadow are adequate to control erosion with conventional...
Entisols are best characterized by:
Entisols are best characterized by:
Answer: Their lack of a B horizo...
As one moves across a loess deposit away from the source, which of the following will most likely increase?
As one moves across a loess deposit away from the source, which of the following will most likely increase?
Answer: Clay conten...
Without drainage or irrigation, corn production is not possible in the warm season but grazing is usually very good during the rainy cool season. This best describes a(n) ___________ moisture region.
Without drainage or irrigation, corn production is not possible in the warm season but grazing is usually very good during the rainy cool season. This...
An Inceptisol is best described as a soil:
An Inceptisol is best described as a soil:
Answer: With limited development in the B horizo...
The texture of volcanic ash soils is usually:
The texture of volcanic ash soils is usually:
Answer: Variable depending on the nature of the as...
The rainfall pattern is fairly uniform. It usually rains every month. This best describes the ________________ moisture regime.
The rainfall pattern is fairly uniform. It usually rains every month. This best describes the ________________ moisture regime.
Answer: Udi...
The Mollisol with a uniform distribution of annual rainfall would probably be a(n):
The Mollisol with a uniform distribution of annual rainfall would probably be a(n):
Answer: Udol...
Compare the soils of New York with those of Eastern Nebraska. The soils of New York will more likely:
Compare the soils of New York with those of Eastern Nebraska. The soils of New York will more likely:
Answer: Have an E horizo...
The parent material of a soil formed in the flood plain on the Skunk River would be called:
The parent material of a soil formed in the flood plain on the Skunk River would be called:
Answer: Alluviu...
Place the following soils in a conceptual weathering sequence. The most weathered is a(n) ___________________.
Place the following soils in a conceptual weathering sequence. The most weathered is a(n) ___________________.
Answer: Oxiso...
An Alfisol must have a(n) ______________ horizon.
An Alfisol must have a(n) ______________ horizon.
Answer: Argilli...
A ____________ horizon is a zone in which salts of sodium and potassium have accumulated.
A ____________ horizon is a zone in which salts of sodium and potassium have accumulated.
Answer: sal...
The subscript o _________.
The subscript o _________.
Answer: suggests a zone with a significant accumulation of oxide clay...
A __________ horizon is a zone in which clay has accumulated.
A __________ horizon is a zone in which clay has accumulated.
Answer: ...
The subscript _______________ suggests a saturated zone deprived of oxygen.
The subscript _______________ suggests a saturated zone deprived of oxygen.
Answer: ...
The subscript __________ suggests a zone with a significant accumulation of silicate clays.
The subscript __________ suggests a zone with a significant accumulation of silicate clays.
Answer: ...
The subscript w ______.
The subscript w ______.
Answer: suggests a zone of weak clay accumulatio...
The subscript ____________ suggests a zone disturbed by human activity.
The subscript ____________ suggests a zone disturbed by human activity.
Answer: ...
A _________ horizon is a zone in which salts of calcium and magnesium have accumulated.
A _________ horizon is a zone in which salts of calcium and magnesium have accumulated.
Answer: calci...
The subscript g _______________
The subscript g _______________
Answer: suggests a saturated zone deprived of oxyge...
A salic horizon is a zone in which ______________
A salic horizon is a zone in which ______________
Answer: salts of sodium and potassium have accumulate...
The subscript t ___________________
The subscript t ___________________
Answer: suggests a zone with a significant accumulation of silicate clay...
The A horizon is _____________
The A horizon is _____________
Answer: an eluviated mineral zone enriched with organic matte...
A zone of illuviation is called the ________________ horizon.
A zone of illuviation is called the ________________ horizon.
Answer: ...
An eluviated mineral zone not enriched with organic matter is called the _______________ horizon.
An eluviated mineral zone not enriched with organic matter is called the _______________ horizon.
Answer: ...
The C horizon is ______________
The C horizon is ______________
Answer: an unconsolidated zone with no eluviation or illuviatio...
The B horizon is ______________
The B horizon is ______________
Answer: a zone of illuviatio...
An eluviated mineral zone enriched with organic matter is called the _____________ horizon.
An eluviated mineral zone enriched with organic matter is called the _____________ horizon.
Answer: ...
An accumulation of organic matter above the regolith is called the ______________ horizon.
An accumulation of organic matter above the regolith is called the ______________ horizon.
Answer: ...
Bedrock is called the _______________ horizon.
Bedrock is called the _______________ horizon.
Answer: ...
The Oi horizon is ______.
The Oi horizon is ______.
Answer: an organic horizon in which some plant parts are still identifiabl...
The R horizon is _________________
The R horizon is _________________
Answer: bedroc...
A transition zone where properties of the B horizon are stronger than properties of the A horizon
A transition zone where properties of the B horizon are stronger than properties of the A horizon
Answer: B...
The Oa horizon is ________
The Oa horizon is ________
Answer: an organic horizon so decomposed that the source material is no longer identifiabl...
The E horizon is __________
The E horizon is __________
Answer: an eluviated mineral zone not enriched with organic matte...
An unconsolidated zone with no eluviation or illuviation is called the ____________ horizon.
An unconsolidated zone with no eluviation or illuviation is called the ____________ horizon.
Answer: ...
The O horizon is ____________
The O horizon is ____________
Answer: an accumulation of organic matter above the regolit...
Sodium and potassium move by ___________
Sodium and potassium move by ___________
Answer: leachin...
Eluviation is _______
Eluviation is _____________
Answer: the loss of a material from a horizon in the soi...
_________ move(s) in solution in the soil.
_________ move(s) in solution in the soil.
Answer: Na, K, Mg, and C...
The gain of material in a horizon in the soil is called __________
The gain of material in a horizon in the soil is called __________
Answer: illuviatio...
__________ move(s) in suspension in the soil.
__________ move(s) in suspension in the soil.
Answer: oxide and silicate clay...
Calcium and magnesium move by ____________
Calcium and magnesium move by ____________
Answer: leachin...
The loss of a material from a horizon in the soil is called ______________
The loss of a material from a horizon in the soil is called ______________
Answer: eluviatio...
______________ leach(es) from the soil
______________ leach(es) from the soil
Answer: Na, K, Mg, and C...
Oxide clays move by ______________
Oxide clays move by ______________
Answer: eluviation-illuviation processe...
Illuviation is _____________
Illuviation is _____________
Answer: the gain of a material in a horizon in the soi...
Silicate clays move by ___________
Silicate clays move by ___________
Answer: eluviation-illuviation processe...
Bed is called the ___________ horizon.
Bed is called the ___________ horizon.
Answer: ...
The C horizon represents ___________
The C horizon represents ___________
Answer: Unweathered, unconsolidated materia...
Soils develop _________ in C horizon materials compared to R horizon materials.
Soils develop _________ in C horizon materials compared to R horizon materials.
Answer: deeper and faster
...
Soils develop ___________ in R horizon materials compared to C horizon materials.
Soils develop ___________ in R horizon materials compared to C horizon materials.
Answer: shallower and slowe...
Soils develop shallower and slower in the _________ horizon
Soils develop shallower and slower in the _________ horizon
Answer: ...
The geologic material in which a soil develops
The geologic material in which a soil develops
Answer: parent materia...
Soils develop deeper and faster in the ______ horizon
Soils develop deeper and faster in the ______ horizon
Answer: ...
Unweathered, unconsolidated material is called the ________ horizon
Unweathered, unconsolidated material is called the ________ horizon
Answer: ...
A collection of pedons across the landscape is a ______________.
A collection of pedons across the landscape is a ______________.
Answer: polypedo...
A soil has 55% pore space. One would expect plant growth to:
A soil has 55% pore space. One would expect plant growth to:
Answer: be norma...
Root growth usually ceases when the percent pore space of a soil gets below ________.
Root growth usually ceases when the percent pore space of a soil gets below ________.
Answer: 30...
A soil has 45 percent pore space. One would expect plant growth to:
A soil has 45 percent pore space. One would expect plant growth to:
Answer: be norma...
Within limits, a compacted soil will hold more:
Within limits, a compacted soil will hold more:
Answer: total wate...
As the percent pore space decreases:
As the percent pore space decreases:
Answer: micropore space increase...
Which of the following values is an unlikely value for the bulk density of a soil?
Which of the following values is an unlikely value for the bulk density of a soil?
Answer: 2.0 g/cm...
A soil has 25 percent pore space. One would expect plant growth to:
A soil has 25 percent pore space. One would expect plant growth to:
Answer: ceas...
Soils with smaller soil particles usually have:
Soils with smaller soil particles usually have:
Answer: more micropore spac...
Which soil separate has the largest surface area per unit weight?
Which soil separate has the largest surface area per unit weight?
Answer: cl...
A soil that forms a good ribbon and also feels smooth
A soil that forms a good ribbon and also feels smooth
Answer: silty cla...
A soil that feels rich and not sticky is rich in:
A soil that feels rich and not sticky is rich in:
Answer: sil...
A soil that forms a fair ribbon and also feels gritty:
A soil that forms a fair ribbon and also feels gritty:
Answer: sandy clay loa...
A soil that feels gritty is rich in:
A soil that feels gritty is rich in:
Answer: san...
A soil that forms no ribbon and neither feels gritty or smooth
A soil that forms no ribbon and neither feels gritty or smooth
Answer: loa...
A soil that forms a good ribbon and also feels gritty
A soil that forms a good ribbon and also feels gritty
Answer: sandy cla...
A soil that forms a fair ribbon and neither feels gritty or smooth
A soil that forms a fair ribbon and neither feels gritty or smooth
Answer: clay loa...
A soil that forms a good ribbon and neither feels gritty or smooth
A soil that forms a good ribbon and neither feels gritty or smooth
Answer: cla...
A soil that forms no ribbon and also feels smooth
A soil that forms no ribbon and also feels smooth
Answer: silt loa...
A soil that forms a good ribbon:
A soil that forms a good ribbon:
Answer: cla...
The space between peds is most important for:
The space between peds is most important for:
Answer: air exchange between the soil and atmospher...
Horizons rich in organic matter are more likely to have _____________ structure
Horizons rich in organic matter are more likely to have _____________ structure
Answer: granula...
Horizons rich in illuviated clay are more likely to have _____________ structure
Horizons rich in illuviated clay are more likely to have _____________ structure
Answer: blocky or prismati...
A unit of non-structure in which the bonding between adjacent particles is equal is called:
A unit of non-structure in which the bonding between adjacent particles is equal is called:
Answer: massiv...
Granular structure is:
Granular structure is:
Answer: spherica...
Soil particles have:
Soil particles have:
Answer: both negative and positive surface charge...
Organic matter is important in soil structure because:
Organic matter is important in soil structure because:
Answer: it has plus and minus charge...
Cation bridges of secondary importance include:
Cation bridges of secondary importance include:
Answer: A...
The arrangement of soil particles in space is called:
The arrangement of soil particles in space is called:
Answer: soil structur...
Negative charges on clay particles are primarily on the:
Negative charges on clay particles are primarily on the:
Answer: negative charges are found on all surface...
Cation bridges of secondary importance include:
Cation bridges of secondary importance include:
Answer: M...
Organic matter is important in soil structure because:
Organic matter is important in soil structure because:
Answer: it is stick...
One of the most important cation bridging ions is:
One of the most important cation bridging ions is:
Answer: C...
Positive charges on clay particles are primarily on the :
Positive charges on clay particles are primarily on the :
Answer: edge of the clay plat...
One of the most important cation bridging ions is:
One of the most important cation bridging ions is:
Answer: F...
The unit of soil structure is called a (an):
The unit of soil structure is called a (an):
Answer: aggregate (ped...
Clays, sandy clays, and silty clays are more than ______ % clay.
Clays, sandy clays, and silty clays are more than ______ % clay.
Answer: 4...
Most soil nutrients are _________.
Most soil nutrients are _________.
Answer: cation...
The surface area of a handful of loam soil is about ____________.
The surface area of a handful of loam soil is about ____________.
Answer: 5-10 acre...
The surface area of the soil in an acre-furrow slice of loam soil is about _______ the area of Iowa.
The surface area of the soil in an acre-furrow slice of loam soil is about _______ the area of Iowa.
Answer: 2/...
Loams and clay loams have less than _______ silt.
Loams and clay loams have less than _______ silt.
Answer: 50...
Soils with high clay contents can be fertilized ________ than sandy soils.
Soils with high clay contents can be fertilized ________ than sandy soils.
Answer: less frequentl...
Most soil nutrients have ________ charges.
Most soil nutrients have ________ charges.
Answer: positiv...
Sands, sandy loams, and sandy clay loams have more than:
Sands, sandy loams, and sandy clay loams have more than:
Answer: 50% san...
Loams and clay loams have less than _______ clay.
Loams and clay loams have less than _______ clay.
Answer: 40...
Silts, silt loams and silty clay loams have more than ___________
Silts, silt loams and silty clay loams have more than ___________
Answer: 50% sil...
Soils with high cation exchange capacities can be fertilized ________ than soils with low cation exchange capacities.
Soils with high cation exchange capacities can be fertilized ________ than soils with low cation exchange capacities.
Answer: less frequentl...
Loams and clay loams have less than ____________ sand
Loams and clay loams have less than ____________ sand
Answer: 50...
The higher the ______ content of a soil the higher its cation exchange capacity.
The higher the ______ content of a soil the higher its cation exchange capacity.
Answer: cla...
The net surface charge of soil clays is:
The net surface charge of soil clays is:
Answer: negativ...
Soils with a higher cation exchange capacity are_______ likely to lead to contamination of groundwater.
Soils with a higher cation exchange capacity are_______ likely to lead to contamination of groundwater.
Answer: les...
It takes _______ times as much energy (calories) to heat water as dry soil
It takes _______ times as much energy (calories) to heat water as dry soil
Answer: 5....
100 g of dry soil contained 30 g of water. How many calories would be required to raise the temperature one degree centigrade?
100 g of dry soil contained 30 g of water. How many calories would be required to raise the temperature one degree centigrade?
Answer: 5...
As the soil permeability increases, one would expect water erosion to ________.
As the soil permeability increases, one would expect water erosion to ________.
Answer: decreas...
100 g of dry soil contained 20 g of water. How many calories would be required to raise the temperature one degree centigrade?
100 g of dry soil contained 20 g of water. How many calories would be required to raise the temperature one degree centigrade?
Answer: 4...
Microbial activity in the soil causes an increase in _______ in the soil air.
Microbial activity in the soil causes an increase in _______ in the soil air.
Answer: CO...
It takes _______ calorie(s) to heat 1 gram of dry soil one degree celsius.
It takes _______ calorie(s) to heat 1 gram of dry soil one degree celsius.
Answer: 0....
100 g of dry soil contained 15 g of water. How many calories would be required to raise the temperature one degree centigrade?
100 g of dry soil contained 15 g of water. How many calories would be required to raise the temperature one degree centigrade?
Answer: 3...
It takes _______ calorie(s) to heat 1 gram of water one degree centigrade.
It takes _______ calorie(s) to heat 1 gram of water one degree centigrade.
Answer: 1....
As roots grow in the soil, the soil air becomes enriched with _______
As roots grow in the soil, the soil air becomes enriched with _______
Answer: CO...
In the Spring Soil A contains 30 g of total water and 15 g of available water. Soil B contains 25 g of total water and 15 g of available water. Seeds were planted in each. They will more likely germinate faster in:
In the Spring Soil A contains 30 g of total water and 15 g of available water. Soil B contains 25 g of total water and 15 g of available water. Seeds...
Soil air usually contains more _____ relative to the air above the soil.
Soil air usually contains more _____ relative to the air above the soil.
Answer: CO...
100 g of dry soil contained 25 g of water. How many calories would be required to raise the temperature one degree centigrade?
100 g of dry soil contained 25 g of water. How many calories would be required to raise the temperature one degree centigrade?
Answer: 4...
Water movement would be slowest in a soil with the highest _______.
Water movement would be slowest in a soil with the highest _______.
Answer: micropore spac...
Aeration is best in a soil rich in _______.
Aeration is best in a soil rich in _______.
Answer: san...
A ________ texture is most desirable for a sewage lagoon.
A ________ texture is most desirable for a sewage lagoon.
Answer: silty cla...
Available soil water would be expected to be highest in a soil with a ______ texture.
Available soil water would be expected to be highest in a soil with a ______ texture.
Answer: silt lo...
Compare a silt loam and clay loam soil. Which would be expected to contain more total water?
Compare a silt loam and clay loam soil. Which would be expected to contain more total water?
Answer: clay lo...
Water movement through the soil is slowest if the soil is high in ______
Water movement through the soil is slowest if the soil is high in ______
Answer: cl...
A _________ texture is usually preferred for irrigated crop production.
A _________ texture is usually preferred for irrigated crop production.
Answer: sandy lo...
Compare a silt loam and clay loam soil. Which would be expected to contain more available water?
Compare a silt loam and clay loam soil. Which would be expected to contain more available water?
Answer: silt lo...
Water movement would be fastest in a soil with the highest _______
Water movement would be fastest in a soil with the highest _______
Answer: macropore spa...
Total soil water would be expected to be highest in a soil with a ______ texture.
Total soil water would be expected to be highest in a soil with a ______ texture.
Answer: silty cl...
Water movement through the soil is fastest if the soil is high in ______________
Water movement through the soil is fastest if the soil is high in ______________
Answer: sa...
Clay has a net ______________ charge.
Clay has a net ______________ charge.
Answer: negati...
The textural class with the greatest surface area per unit weight is:
The textural class with the greatest surface area per unit weight is:
Answer: sandy cl...
Who was mainly involved in the 3rd Agricultural Revolution?
Who was mainly involved in the 3rd Agricultural Revolution?
Answer: Ind...
What are the 3 miracle seeds in the 3rd Agricultural Revolution ?
What are the 3 miracle seeds in the 3rd Agricultural Revolution ?
Answer: Wheat, rice, and co...
What were the two steps in the 3rd Agricultural Revolution ?
What were the two steps in the 3rd Agricultural Revolution ?
Answer: Introduction of higher yield seeds and expand the use of fertilizer...
What kind of Biotechnology was in the 3rd Agricultural Revolution ?
What kind of Biotechnology was in the 3rd Agricultural Revolution ?
Answer: GMOS, herbicides and pesticides, machinery, and fertilizer...
When did the 3rd Agricultural Revolution happen?
When did the 3rd Agricultural Revolution happen?
Answer: In the 70s/80...
What was the 3rd Agricultural Revolution known as?
What was the 3rd Agricultural Revolution known as?
Answer: The Green Revolutio...
In the 2nd Agricultural Revolution what did we move from?
In the 2nd Agricultural Revolution what did we move from?
Answer: Labor intensive to labor extensiv...
In the 2nd Agricultural Revolution what does mechanization mean?
In the 2nd Agricultural Revolution what does mechanization mean?
Answer: Mass Productio...
What was going on during the 2nd Agricultural Revolution?
What was going on during the 2nd Agricultural Revolution?
Answer: Industrial Revolutio...
What lifestyle did we leave in the 1st Agricultural Revolution?
What lifestyle did we leave in the 1st Agricultural Revolution?
Answer: Hunter-gathere...
What allowed us to become 1st time sedentary farmers?
What allowed us to become 1st time sedentary farmers?
Answer: The Ice Ag...
When was the 1st Agricultural Revolution?
When was the 1st Agricultural Revolution?
Answer: 8,000 BCE or 10,000 years ag...
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