The 4 Spheres of the Earth
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Questions and Answers

Which sphere of the Earth is the only one considered biotic?

  • Geosphere
  • Biosphere (correct)
  • Hydrosphere
  • Atmosphere

    • What does the Greek prefix 'geo-' mean?

  • Water
  • Earth (correct)
  • Life
  • Vapor

    • Which sphere of the Earth is composed of solid land in Earth's crust?

  • Geosphere (correct)
  • Biosphere
  • Atmosphere
  • Hydrosphere

    • What does the word 'atmosphere' originate from?

    <p>'Vapor'</p> Signup and view all the answers

    How does water vapor connect the hydrosphere and atmosphere?

    <p>By being present in the upper atmosphere</p> Signup and view all the answers

    Which sphere is affected when humans cut down trees for industrialization?

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

    What is the main contributor to humidity on a muggy day?

    <p>Water vapor</p> Signup and view all the answers

    How does rainfall connect the hydrosphere and biosphere?

    <p>By accumulating in bodies of water</p> Signup and view all the answers

    What is the most abundant gas in Earth's atmosphere?

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

    Which layer of the atmosphere is responsible for blocking ultraviolet radiation?

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

    Where do most organisms live within the biosphere?

    <p>At the surface of the Earth</p> Signup and view all the answers

    Which layer of the geosphere is composed of liquid iron and nickel?

    <p>Outer core</p> Signup and view all the answers

    What is the temperature of the inner core of Earth's geosphere?

    <p>$6,000$ degrees celsius</p> Signup and view all the answers

    Where is the maximum temperature recorded within Earth's crust?

    <p>$871$ degrees celsius</p> Signup and view all the answers

    How much of the water on Earth is present in oceans?

    <p>&gt;97.5%</p> Signup and view all the answers

    What is the composition of the atmosphere's oxygen, as mentioned in the text?

    <p>21%</p> Signup and view all the answers

    Which layer of the atmosphere accounts for nearly 15 kilometers above Earth's surface?

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

    Where can some organisms be found within the biosphere?

    <p>All of the above</p> Signup and view all the answers

    Which layer of the geosphere is the hottest, according to the text?

    <p>Inner core</p> Signup and view all the answers

    What is the most abundant form of water found in the hydrosphere?

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

    What distinguishes the biosphere from the other three spheres of the Earth?

    <p>It contains living organisms.</p> Signup and view all the answers

    Which sphere of the Earth is primarily abiotic in nature?

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

    What makes up the geosphere according to the text?

    <p>All solid land in Earth's crust</p> Signup and view all the answers

    Which sphere of the Earth is located as far as 10,000 kilometers above Earth's surface?

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

    What Greek prefix is associated with the word 'hydrosphere'?

    <p>Hydro-</p> Signup and view all the answers

    How does water vapor in the atmosphere connect the hydrosphere and atmosphere?

    <p>By contributing to rainfall that connects the two spheres</p> Signup and view all the answers

    In what form does water exist in the hydrosphere mainly?

    <p>Liquid form in rivers and oceans</p> Signup and view all the answers

    How do humans affect Earth's geosphere negatively?

    <p>By cutting down trees for industrialization</p> Signup and view all the answers

    Which sphere does rainfall connect to the biosphere?

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

    What is responsible for the humidity on a muggy day?

    <p>Gaseous water vapor in the atmosphere</p> Signup and view all the answers

    Study Notes

    Spheres of the Earth

    • The biosphere is the only biotic sphere of the Earth.
    • The Greek prefix 'geo-' means earth or ground.

    Geosphere

    • The geosphere is composed of solid land in Earth's crust.
    • The inner core of the geosphere has a temperature of around 5,000°C to 6,000°C (9,000°F to 11,000°F).
    • The hottest layer of the geosphere is the core.
    • The layer of the geosphere composed of liquid iron and nickel is the outer core.
    • The geosphere is made up of the crust, mantle, outer core, and inner core.
    • Human activities such as deforestation negatively affect the geosphere.

    Atmosphere

    • The word 'atmosphere' originates from the Greek words 'atmos' meaning vapor and 'sphaira' meaning sphere.
    • The most abundant gas in the Earth's atmosphere is nitrogen.
    • Oxygen makes up around 21% of the atmosphere.
    • The stratosphere is responsible for blocking ultraviolet radiation.
    • The troposphere accounts for nearly 15 kilometers above Earth's surface.
    • Water vapor in the atmosphere connects the hydrosphere and atmosphere.
    • The atmosphere is responsible for humidity on a muggy day.

    Hydrosphere

    • The majority of the water on Earth (around 97%) is present in oceans.
    • Water exists mainly in the liquid form in the hydrosphere.
    • The hydrosphere is connected to the atmosphere through water vapor.

    Biosphere

    • The biosphere is the sphere of the Earth where most organisms live, including oceans, land, and atmosphere.
    • Rainfall connects the hydrosphere and biosphere.
    • Some organisms can be found in the atmosphere, ice, and water within the biosphere.
    • The biosphere is distinguished from the other three spheres in that it is the only one that supports life.
    • The lithosphere is primarily abiotic in nature.

    Interconnections

    • Water vapor in the atmosphere connects the hydrosphere and atmosphere.
    • Rainfall connects the hydrosphere and biosphere.
    • The biosphere is affected when humans cut down trees for industrialization.

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    Description

    Learn about the four interconnected spheres of the Earth - Atmosphere, Biosphere, Geosphere, and Hydrosphere. Understand how air, living things, land, and water are categorized into these different spheres and how they interact with each other.

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