Gr 9 NATURAL SCIENCES: CH 4.1 Spheres of the Earth
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Questions and Answers

What is the biosphere?

  • The sphere of land, including Earth's crust and upper mantle.
  • The sphere of air, consisting of all gases surrounding Earth.
  • The sphere of water, including all of Earth's water bodies.
  • The sphere of life, encompassing all living organisms on Earth. (correct)

    • What percentage of Earth's surface is covered by water?

  • 80%
  • 50%
  • 60%
  • 70% (correct)

    • What is the hydrosphere?

  • The sphere of life, encompassing all living organisms on Earth.
  • The sphere of land, including Earth's crust and upper mantle.
  • The sphere of water, including all of Earth's water bodies. (correct)
  • The sphere of air, consisting of all gases surrounding Earth.

    • What is an example of the atmosphere?

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

    What is the lithosphere?

    <p>The sphere of land, including Earth's crust and upper mantle.</p> Signup and view all the answers

    Where is most life on Earth found?

    <p>Within 3 meters below the surface to 30 meters above it</p> Signup and view all the answers

    What are the four interconnected spheres of the Earth?

    <p>Lithosphere, hydrosphere, atmosphere, and biosphere</p> Signup and view all the answers

    What is the main component of the Earth's atmosphere?

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

    What is the lithosphere composed of?

    <p>Earth's crust and the upper part of the mantle</p> Signup and view all the answers

    What is an example of the interaction between the atmosphere and the biosphere?

    <p>Trees providing oxygen to the atmosphere</p> Signup and view all the answers

    What can happen when the balance between the spheres is disrupted?

    <p>The Earth's system is affected negatively</p> Signup and view all the answers

    What is an example of human activity that involves the lithosphere?

    <p>Harvesting crops using machinery made from materials from the lithosphere</p> Signup and view all the answers

    What is a consequence of pollution in the atmosphere?

    <p>The availability of carbon dioxide for trees is affected</p> Signup and view all the answers

    What is the importance of understanding the interactions between the spheres?

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

    What is an example of the atmosphere?

    <p>The top of Earth's atmosphere</p> Signup and view all the answers

    Which of the following is NOT an example of the lithosphere?

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

    What is the primary characteristic that defines the biosphere?

    <p>It includes all living organisms on Earth</p> Signup and view all the answers

    What is a common feature of the biosphere and hydrosphere?

    <p>Both support life on Earth</p> Signup and view all the answers

    Which of the following is an example of an interaction between the hydrosphere and atmosphere?

    <p>Cloud formation</p> Signup and view all the answers

    What is a consequence of the interaction between the spheres?

    <p>The sustaining of life on Earth</p> Signup and view all the answers

    Which of the following is NOT a characteristic of the atmosphere?

    <p>It is solid in form</p> Signup and view all the answers

    Why is understanding the interactions between the spheres important?

    <p>To appreciate the complexity of the Earth system</p> Signup and view all the answers

    What is the primary component of the Earth's atmosphere?

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

    What is the region of the Earth's system that includes mountains, rocks, and soil?

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

    What is the result of a disruption in the balance between the Earth's spheres?

    <p>A disruption in the entire Earth system</p> Signup and view all the answers

    What is an example of a natural event that can disrupt the balance of the Earth's system?

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

    What is the reason why humans need to understand the interactions between the Earth's spheres?

    <p>To ensure the Earth remains habitable</p> Signup and view all the answers

    What is an example of a resource that is obtained from the lithosphere?

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

    What is the result of a shortage of water in the hydrosphere?

    <p>A hindrance to plant growth</p> Signup and view all the answers

    What is the role of trees in the biosphere?

    <p>To provide oxygen and food</p> Signup and view all the answers

    What is the primary characteristic of the atmosphere that affects its density?

    <p>Proximity to the Earth's surface</p> Signup and view all the answers

    Which of the following is an example of a resource that is not obtained from the lithosphere?

    <p>Carbon dioxide</p> Signup and view all the answers

    What is the primary consequence of a disruption in the balance between the Earth's spheres?

    <p>Impacts on the entire Earth system</p> Signup and view all the answers

    Which of the following is an example of a human activity that does not involve the lithosphere?

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

    What is the primary reason why understanding the interactions between the spheres is crucial?

    <p>To maintain life and the environment</p> Signup and view all the answers

    Which of the following is an example of a natural event that does not disrupt the balance of the Earth's system?

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

    What is the primary characteristic that distinguishes the biosphere from the other spheres?

    <p>It is the sphere that is capable of supporting life.</p> Signup and view all the answers

    What is the primary role of trees in the interaction between the spheres?

    <p>To perform photosynthesis using resources from multiple spheres</p> Signup and view all the answers

    What is the primary consequence of a shortage of water in the hydrosphere?

    <p>Impacts on plant growth and development</p> Signup and view all the answers

    Which of the following is an example of an interaction between the lithosphere and the hydrosphere?

    <p>Formation of oceanic crust at mid-ocean ridges.</p> Signup and view all the answers

    What is the consequence of a shortage of water in the hydrosphere?

    <p>A disruption to the food chain and ecosystem balance.</p> Signup and view all the answers

    Which of the following is an example of a human activity that involves the atmosphere and the biosphere?

    <p>Deforestation and land use changes.</p> Signup and view all the answers

    What is the result of a disruption in the balance between the Earth's spheres?

    <p>A change in the Earth's climate and ecosystem.</p> Signup and view all the answers

    Which of the following is an example of a natural event that can disrupt the balance of the Earth's system?

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

    What is the reason why humans need to understand the interactions between the Earth's spheres?

    <p>To mitigate the impact of human activities on the environment.</p> Signup and view all the answers

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