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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?

Perihelion Signup and view all the answers

What is the approximate diameter of the Earth?

12,900 km Signup and view all the answers

What shape is the Earth approximately?

Oblate spheroid Signup and view all the answers

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

Revolution Signup and view all the answers

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

147 million kilometres Signup and view all the answers

In which month does the Earth reach aphelion?

July Signup and view all the answers

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

Rotation Signup and view all the answers

In which month does the Earth reach perihelion?

January Signup and view all the answers