Planet Earth: Composition and Structure
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Questions and Answers

What is the approximate difference in diameter between the Earth's polar and equatorial regions?

  • 100 km
  • 43 km (correct)
  • 1000 km
  • 500 km
  • What is the approximate percentage of oxygen in the Earth's atmosphere?

  • 25%
  • 21% (correct)
  • 10%
  • 15%
  • What is the term for the Earth's movement around the Sun?

  • Rotation
  • Revolution (correct)
  • Oscillation
  • Orbit
  • What is the term for the point at which the Earth is closest to the Sun?

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

    What is the approximate diameter of the Earth?

    <p>12,900 km</p> Signup and view all the answers

    What shape is the Earth approximately?

    <p>Oblate spheroid</p> Signup and view all the answers

    What is the term for the movement of one mass around another?

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

    What is the approximate distance from the Sun when the Earth is at perihelion?

    <p>147 million kilometres</p> Signup and view all the answers

    In which month does the Earth reach aphelion?

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

    What is the term for the spin of an object on its internal axis?

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

    In which month does the Earth reach perihelion?

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

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