Earth System and Major Themes Quiz
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Questions and Answers

What is the primary composition of the Earth's crust?

  • Potassium and sodium
  • Silicon and oxygen (correct)
  • Iron and magnesium
  • Aluminum and calcium

What is the main feature of the Earth's core?

  • It is the outermost layer of the Earth
  • It generates the Earth's magnetic field (correct)
  • It is composed of silicate rocks
  • It is a gaseous layer surrounding the Earth

Which scientist popularized the term 'biosphere'?

  • Friedrich Wilhelm Heinrich Alexander von Humboldt
  • James Lovelock
  • Lyn Margulis
  • Vladimir Vernadsky (correct)

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

<p>78% nitrogen, 21% oxygen (B)</p> Signup and view all the answers

Which scientist(s) developed the Gaia Hypothesis?

<p>James Lovelock and Lyn Margulis (B)</p> Signup and view all the answers

What was the significance of the report 'Earth System Science: A Program for Global Change' published in 1988?

<p>It demonstrated how the Earth's systems are interconnected (D)</p> Signup and view all the answers

What powers the Earth system?

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

What percentage of Earth's water is fresh?

<p>3% (A)</p> Signup and view all the answers

Which subsystem includes all life forms on Earth?

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

In a closed system, which of the following exchanges occur?

<p>Exchange of heat or energy only (D)</p> Signup and view all the answers

What are the major themes in the Earth system?

<p>Scale, Energy, and Cycles (A)</p> Signup and view all the answers

Which component of the Earth system covers the solid Earth from the surface to the center?

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

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