Soil Composition and Types in Ireland
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Questions and Answers

Which of the following is NOT a component of soil?

  • Plastic (correct)
  • Humus
  • Mineral matter
  • Air
  • Humus is formed through the process of humification, where dead plants and leaves decay.

    True (A)

    What type of soil is best suited for dairy farming?

  • Sandy soil
  • Silty soil
  • Clay soil (correct)
  • Loamy soil
  • What is the largest component of soil?

    <p>Mineral matter</p> Signup and view all the answers

    A soil with a pH of 5 is considered alkaline.

    <p>False (B)</p> Signup and view all the answers

    The decomposition of dead plants and leaves creates a dark, jelly-like substance called ______.

    <p>humus</p> Signup and view all the answers

    Match the soil particle type with its approximate size:

    <p>Clay = &lt; 0.002 mm Silt = 0.002 - 0.05 mm Sand = &gt; 0.05 mm</p> Signup and view all the answers

    What is the process called when minerals are washed out of the soil by excess water?

    <p>Leaching</p> Signup and view all the answers

    The shape of the land, whether upland or lowland, is known as ______.

    <p>Relief</p> Signup and view all the answers

    Which of the following is NOT a benefit of living organisms in soil?

    <p>Prevent water infiltration (B)</p> Signup and view all the answers

    Match the following soil characteristics with their descriptions:

    <p>Sandy soil = Good drainage, but often lacks nutrients Clay soil = Retains moisture well, but can be difficult to work with Loamy soil = Well-balanced mixture of sand, silt and clay, ideal for farming</p> Signup and view all the answers

    Clay soil tends to drain well and allows water to pass through easily.

    <p>False (B)</p> Signup and view all the answers

    Why is air essential for plant growth?

    <p>Air provides oxygen and nitrogen for plant growth.</p> Signup and view all the answers

    Which of the following factors contributes to the formation of deep soils?

    <p>Hot climate (A)</p> Signup and view all the answers

    Granite weathers faster than limestone.

    <p>False (B)</p> Signup and view all the answers

    What is the primary role of lime in soil management?

    <p>To neutralize acidity</p> Signup and view all the answers

    What is the primary function of the Nutrient Cycle?

    <p>To illustrate how nutrients move between soil and plants (A)</p> Signup and view all the answers

    Overgrazing can lead to increased plant cover by animals.

    <p>False (B)</p> Signup and view all the answers

    Name two nutrients that are part of the Nutrient Cycle.

    <p>Nitrogen, Carbon</p> Signup and view all the answers

    If there is too much rainfall, __________ may happen, preventing plants from absorbing nutrients.

    <p>leaching</p> Signup and view all the answers

    What can be a direct consequence of overcropping?

    <p>Loss of soil quality (B)</p> Signup and view all the answers

    Match the following causes of soil degradation with their effects:

    <p>Overgrazing = Soil erosion and loss of vegetation Overcropping = Nutrient depletion and soil quality loss Deforestation = Exposed soils and increased erosion Leaching = Nutrient unavailability for plants</p> Signup and view all the answers

    The topsoil in Ireland was protected from erosion due to the increase of sheep farming.

    <p>False (B)</p> Signup and view all the answers

    What is one potential risk of heavy rainfall in areas affected by overgrazing?

    <p>Landslides</p> Signup and view all the answers

    What is one of the primary causes of climate change?

    <p>Burning fossil fuels (B)</p> Signup and view all the answers

    Desertification can lead to increased rainfall in some regions.

    <p>False (B)</p> Signup and view all the answers

    Name a region in Africa that is experiencing desertification.

    <p>The Sahel</p> Signup and view all the answers

    Drought leads to __________, which causes the spread of desert into fertile land.

    <p>desertification</p> Signup and view all the answers

    Which of the following is NOT a solution to desertification?

    <p>Expanding desert areas (C)</p> Signup and view all the answers

    What effect does leaching have on soil?

    <p>It washes nutrients deep into the soil (A)</p> Signup and view all the answers

    Tropical red soils are formed as a result of intense chemical weathering.

    <p>True (A)</p> Signup and view all the answers

    What is the primary color of tropical red soils and why?

    <p>Rusty-red, due to iron oxide</p> Signup and view all the answers

    Peat soils are fertile and suitable for arable farming.

    <p>False (B)</p> Signup and view all the answers

    Name the four main soil types found in Ireland.

    <p>Peat soil, Gley, Brown earths, Podzols</p> Signup and view all the answers

    Match the following impacts of human activity with their effects on tropical red soils:

    <p>Overgrazing = Exposes the soil leading to erosion Over-farming = Leads to soil erosion Leaching = Washes nutrients into topsoil High temperature and humidity = Causes rapid decay of humus</p> Signup and view all the answers

    A soil profile is a cross-section down through a soil that shows the different layers called __________.

    <p>horizons</p> Signup and view all the answers

    Which soil type is formed in cold, wet, upland areas and is characterized by waterlogging?

    <p>Gleys (B)</p> Signup and view all the answers

    Match the following soil types with their characteristics:

    <p>Podzols = Infertile, slightly acidic, found in cold, wet upland areas Brown soils = Fertile, well-drained, suitable for arable farming Peat soils = Black in color, waterlogged, limited plant litter Gleys = Blue-grey color, poorly drained, found in cold regions</p> Signup and view all the answers

    Brown earths are the most common soil type in Ireland.

    <p>True (A)</p> Signup and view all the answers

    What process occurs when excessive rainfall causes nutrients to wash away?

    <p>Leaching</p> Signup and view all the answers

    Flashcards

    Soil Acidity

    The measure of how acidic or alkaline soil is, affecting plant growth.

    pH Scale

    A scale that measures soil acidity, ranging from 0 (most acidic) to 14 (most alkaline).

    Lime

    A substance made from limestone, used to neutralize acidic soils.

    Leaching

    The process where nutrients are washed away from the soil, often in heavy rain conditions.

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    Bedrock

    The solid rock underlying soil, which breaks down to form soil minerals.

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    Weathering

    The breaking down of rocks into smaller particles, contributing to soil formation.

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    Relief

    The physical shape of the land, affecting soil retention and moisture.

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    Chemical Weathering

    The process that rapidly breaks down rocks in hot climates, forming deep soils.

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    Composition of Soil

    Soil consists of mineral matter, humus, air, water, and living organisms.

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    Mineral Matter

    The largest component of soil, derived from weathered bedrock, including stones, sand, clay, and silt.

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    Humus

    A nutrient-rich, dark substance formed from decayed organic matter that increases soil fertility.

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    Humification

    The process by which dead organic material decays to form humus.

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    Air in Soil

    Essential for plant growth, found in soil spaces, vital for organisms' survival.

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    Water in Soil

    Dissolves minerals and nutrients, allowing plants to absorb them through roots; crucial for growth.

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    Soil Types

    Classified by texture: clay (smallest), silt (medium), sand (largest).

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    Role of Living Organisms

    Earthworms and microorganisms mix soil, help break down matter, enhancing fertility.

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    Climate change

    Rapid alterations in the Earth's climate due to fossil fuel combustion.

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    Drought

    A prolonged period of below-average rainfall leading to water shortage.

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    Desertification

    The process where fertile land becomes desert due to various factors, including drought.

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    Sahel region

    A semi-arid area in Africa, south of the Sahara, experiencing desertification.

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    Effects of desertification

    Includes famine, animal deaths, land erosion, and forced migration.

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    Irrigation schemes

    Water management practices to supply water for farming and conserve soil moisture.

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    Tropical red soils

    Deep, iron-rich soils formed in hot, humid equatorial climates, often eroded by human activity.

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    Ecosystem

    An area where living organisms interact with their environment.

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    Nutrient Cycle

    The process of nutrient movement between soil and plants.

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    Infertile Soil

    Soil that lacks essential nutrients for plant growth.

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    Overgrazing

    Too many animals grazing in one area, damaging plant cover.

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    Soil Erosion

    The removal of topsoil due to wind, water, or farming practices.

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    Overcropping

    Farming the same crop repeatedly, depleting soil nutrients.

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    Deforestation

    The clearing of trees, leading to soil exposure and degradation.

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    Soil Leaching

    The process of washing away minerals and nutrients from soil, making it less fertile.

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    Soil Profile

    A cross-section of soil showing different layers known as horizons.

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    Podzol Soil

    Soil formed in cold, wet upland areas with grey color and leaching leading to hardpan.

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    Brown Earth Soil

    Dark brown soil formed in regions once covered by deciduous trees, rich in humus.

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    Peat Soil

    Dark, waterlogged soil found in upland areas, rich in partially decayed organic matter.

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    Gley Soil

    Blue-grey soil found in cold regions, poorly drained due to high clay content, often waterlogged.

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    Soil and Vegetation Interconnection

    Soil forms part of an ecosystem, supporting plant life crucial to the environment.

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    Study Notes

    Soil Composition

    • Soil is composed of mineral matter, humus, water, air, and living organisms.
    • Mineral matter is the largest component, derived from weathered bedrock. Examples include stones, sand, clay, and silt.
    • Humus is a dark, jelly-like substance rich in nutrients, created by decaying plant and leaf matter. Humification is the process.
    • Air fills the spaces between soil particles, essential for plant growth and providing oxygen for living organisms.
    • Water dissolves minerals and nutrients, aiding plant absorption through roots.
    • Living organisms such as earthworms, bacteria, and fungi contribute to soil mixing, nutrient cycling, and humus formation.

    Soil Types in Ireland

    • Ireland has four main soil types: Peat, Gley, Brown Earths, and Podzols.
    • Peat soil: Found in bogs, black in colour, limited plant litter, high rainfall leading to waterlogging, and poor fertility.
    • Gley soil: Blue-grey in colour, high rainfall and waterlogging, impermeable bedrock, and infertile.
    • Brown Earths: Dark brown colour, found in the Midlands, South, and East of Ireland, plentiful plant litter, fertile, and good for arable farming.
    • Podzols: Grey or light grey colour, coniferous forest areas, cold and wet, acidic, infertile, and best suited for forestry or grazing.

    Soil Formation

    • Soil formation factors include Bedrock, Relief, Climate, and Human Activity.
    • Bedrock: Source of mineral matter. Some rocks weather quickly while others take longer, affecting the characteristics and time taken to form soil.
    • Relief: Upland areas (higher) tend to be wetter and have less plant life, while lowland areas (lower) typically have well-drained soils with more humus.
    • Climate: Rainfall and temperature influence weathering rates and soil depth. Cold regions have thin, slow-forming soils, while hot regions develop deep soils from rapid weathering,
    • Human activity: Impacts soil composition; farming practices, irrigation, and deforestation can make soil more fertile or reduce its fertility impacting nutrients or leading to erosion and mass movement.

    Soil Texture and Soil Acidity

    • Clay soils are heavy, sticky, difficult to plough, and commonly used for dairy farming.
    • Silt soils drain well but can get waterlogged with rainfall.
    • Sand soils drain easily.
    • Soil acidity, measured using the pH scale, affects plant growth. Optimal plant growth mostly occurs in a pH of 6.5.

    Soil Processes and Exploitation

    • Leaching: Process where water washes minerals and nutrients into lower layers or out of the soil. Excess leaching can lead to infertile soil.
    • Overgrazing: Too many animals grazing in a limited area removes plant cover, exposing soil to wind and rain, causing erosion and reduced vegetation, potentially leading to landslides and further losses.
    • Soil erosion: The removal of top soil, resulting from factors such as over grazing, deforestation, overcropping and climate change.
    • Overcropping: Repeated farming of the same crop on the same land depletes nutrients and reduces soil quality.
    • Deforestation: Removal of trees exposes the soil to the elements and reduces soil fertility

    How Soil and Vegetation are Interconnected

    • Soil is part of an ecosystem or biome.
    • Ecosystems involve the interaction of plants, animals, and their environment.
    • Soil and plants interact through the nutrient cycle.
    • This cycle involves the continuous movement of elements like nitrogen, carbon, and iron between the soil and plants.

    Case Studies

    • Case studies of overgrazing in Ireland and human activity in Brazil illustrate the impacts of these practices on soil quality, fertility, and environmental consequences.
    • Climate change-induced drought and desertification lead to famine, erosion of land, and migration.

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    Description

    Explore the essential components of soil and the various types found in Ireland. This quiz covers mineral matter, humus, water, air, and the living organisms that contribute to soil health. Test your knowledge on the four main soil types: Peat, Gley, Brown Earths, and Podzols.

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