Earth's Global Systems Overview
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Questions and Answers

What does the term 'biosphere' refer to?

  • The layer of gases surrounding the Earth
  • The soil and minerals beneath the Earth's surface
  • The parts of the Earth where life exists (correct)
  • The bodies of water on the planet
  • Which of the following would not be part of the biosphere?

  • Trees in a forest
  • Dead rocks in a mountain (correct)
  • Oxygen in the atmosphere
  • Rivers and lakes
  • What is the atmosphere composed of?

  • A thin layer of gases (correct)
  • Only oxygen and nitrogen
  • Liquid water and ice
  • Solid rocks and minerals
  • What function does the atmosphere serve in relation to organisms on Earth?

    <p>It protects organisms from harmful solar radiation.</p> Signup and view all the answers

    How does the biosphere interact with abiotic factors?

    <p>Living organisms affect the non-living environment</p> Signup and view all the answers

    What is one of the main components of the lithosphere?

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

    What would happen to Earth if there were no atmosphere?

    <p>It would experience extreme temperatures</p> Signup and view all the answers

    Why is the Earth not getting bigger despite new lithosphere being formed?

    <p>Because lithosphere is recycled as old parts are destroyed.</p> Signup and view all the answers

    What elements does the biosphere rely on for survival?

    <p>Land, air, and water</p> Signup and view all the answers

    What percentage of the Earth's air is located within 12 km of its surface?

    <p>80%</p> Signup and view all the answers

    Where does most life within the biosphere exist?

    <p>Between 500 m below sea level and 6 km above sea level</p> Signup and view all the answers

    What is the fundamental role of the hydrosphere apart from sustaining life?

    <p>It regulates the Earth's temperature.</p> Signup and view all the answers

    What are the two types of lithosphere?

    <p>Oceanic and continental</p> Signup and view all the answers

    Which of the following best describes the lithosphere?

    <p>The solid outer part of the Earth, including soil and rocks</p> Signup and view all the answers

    What primarily forms the new lithosphere?

    <p>Molten rock when it cools</p> Signup and view all the answers

    What is the approximate radius of the Earth?

    <p>6,371 km</p> Signup and view all the answers

    What is the primary cause of erosion?

    <p>The movement of soil</p> Signup and view all the answers

    How do plants in the biosphere contribute to soil health?

    <p>By extracting nutrients from the soil</p> Signup and view all the answers

    Which sphere involves the solid components of the Earth?

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

    What environmental condition primarily affects living things in mountainous regions?

    <p>High elevation</p> Signup and view all the answers

    Which factor is considered when discussing the hydrosphere's impact on the environment?

    <p>Water and ice presence</p> Signup and view all the answers

    How does weather in mountainous regions primarily impact living organisms?

    <p>It affects their adaptation strategies</p> Signup and view all the answers

    Which of the following spheres is NOT involved in weather patterns?

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

    What is a primary consequence of snow precipitation in mountain areas?

    <p>Changes in animal migration patterns</p> Signup and view all the answers

    What role does the cryosphere play in the environment?

    <p>Reflecting UV rays</p> Signup and view all the answers

    Which of the following factors does not influence the landscape according to the interaction of the spheres?

    <p>Flora and fauna evolution</p> Signup and view all the answers

    What is the primary component of the hydrosphere?

    <p>Saltwater and freshwater</p> Signup and view all the answers

    How much ice are Antarctica and Greenland losing each year?

    <p>Over 400 billion tons</p> Signup and view all the answers

    Which of the following is considered part of the lithosphere?

    <p>Earth’s crust and soil</p> Signup and view all the answers

    Which sphere plays a role in maintaining the amount of moisture in the air?

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

    What are the two main layers of soil?

    <p>Topsoil and subsoil</p> Signup and view all the answers

    In what way do tectonic plates affect other spheres?

    <p>They shape the lithosphere and influence ecosystems.</p> Signup and view all the answers

    Study Notes

    Earth’s Global Systems

    • The biosphere encompasses all ecosystems on Earth, including living organisms and the non-living elements they depend on.

    Atmosphere

    • The atmosphere is a thin layer of gases surrounding Earth.
    • It serves as a protective shield against space hazards and plays a vital role in regulating climate, weather, and sound transmission.

    Lithosphere

    • The lithosphere is the Earth’s outermost solid layer, comprised of the crust and upper mantle.
    • This layer is constantly changing as new lithosphere forms through magma cooling and solidifies while old lithosphere is consumed through subduction.

    Hydrosphere

    • The hydrosphere encompasses all of Earth’s water, including saltwater, freshwater, ice, groundwater, and water vapour.
    • Water is essential for life and shapes Earth’s landscape.
    • The frozen parts of the hydrosphere (cryosphere) reflect UV rays and circulate air and water globally.

    Interactions Between Earth's Spheres

    • Earth's spheres interact to influence factors such as landscape, soil formation, and salinity.
    • Movement of tectonic plates (lithosphere) directly impacts the biosphere, atmosphere, and hydrosphere.
    • Soil (lithosphere) is influenced by the atmosphere (wind), hydrosphere (water), and biosphere (living things).
    • Weather (atmosphere) is impacted by elevation (lithosphere) and precipitation (hydrosphere) and in turn affects the biosphere (living things).

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    Description

    Explore the fundamental components of Earth's systems in this quiz, including the biosphere, atmosphere, lithosphere, and hydrosphere. Understand how these interconnected spheres interact and sustain life on our planet. Test your knowledge about each layer's role and significance.

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