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

What is the lithosphere?

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

What are the four interconnected spheres of the Earth?

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

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

<p>Nitrogen (D)</p> Signup and view all the answers

What is the lithosphere composed of?

<p>Earth's crust and the upper part of the mantle (C)</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 (C)</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 (A)</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 (A)</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 (B)</p> Signup and view all the answers

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

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

What is an example of the atmosphere?

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

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

<p>Oceans (C)</p> Signup and view all the answers

What is the primary characteristic that defines the biosphere?

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

What is a common feature of the biosphere and hydrosphere?

<p>Both support life on Earth (A)</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 (C)</p> Signup and view all the answers

What is a consequence of the interaction between the spheres?

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

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

<p>It is solid in form (D)</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 (B)</p> Signup and view all the answers

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

<p>Nitrogen (C)</p> Signup and view all the answers

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

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

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

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

What is the role of trees in the biosphere?

<p>To provide oxygen and food (C)</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 (B)</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 (D)</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 (A)</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 (B)</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 (C)</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 (D)</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. (C)</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 (C)</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 (C)</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. (B)</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. (C)</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. (A)</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. (B)</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. (D)</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. (C)</p> Signup and view all the answers

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